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(Reference: Basics of Beam Expander)

 

We manufacture a variety of laser beam expanders to suit most laser types, from small waveguide lasers up to multi-kilowatt industrial lasers. There is also a modular range for experimental and laboratory purposes.

 

The most common type of beam expander is derived from the Galilean telescope which usually has one negative input lens and one positive output lens. The input lens presents a virtual beam focus at the output. For low expansion ratios (1.3-20 times) the Galilean telescope is most often employed due to its simplicity, small package size and low cost.

* Material: BK7 fine annealed
* Diameter: -0.1mm
* Thickness: ±0.1mm
* Flatness:
l/4
* Surface Quality: 60-40 scratch-dig
* Coating: HR dielectric coatings R > 99%

 

Part number description: BEST-xxx-yy-z-M-T-AA

BEST ---  BEST series beam expanders

xxxx------- laser wavelength: 10.6 means 10.6um, 532 means 532nm, 633 means 633nm.

yy  -------- expansion ratio in times

Z   -------- lens material: Z means ZnSe; G means GaAs, none means optical glass.

L ---------- beam expander shaper, L means trumpet-shape, none means cylinder shape.

M --------- connection: M means screw connection; none means cylinder connection.

T ---------- type: T means adjustable beam expander; none means fixed beam expander.

AA -------- special purpose.

Example: BEST-10.6-3GM: 10.6um fixed beam expander, 3x, GaAs material, cylinder, screw connection.

                BEST-10.6-3.5Z: 10.6um fixed beam expander, 3.5x, ZnSe material, cylinder.

 

1. CO2 Laser Beam Expanders (10.6um)

 

There are 2 types of beam expander: fixed and adjustable beam expanders. For the fixed beam expanders, the spacing between the two lenses inside the beam expander is fixed, but the spacing between the two lenses inside the adjustable beam expanders is adjustable. The lens material is ZeSe, which allows the red light to go through the beam expander.

 

(1) Fixed Beam Expanders:

 

there are 2 types of outlines: cylinder shape and trumpet shape. For each outline there are 2 types of connections: cylinder connection and screw connection.

 

Cylinder-shape fixed beam expander

  

Model

Expansion ratio (times)

L

(mm)

D

(mm)

l

(mm)

Input clear aperture (mm)

Output clear aperture ( mm )

Connection

(mm)

BEST-10.6-2Z

2

30

24

 

7

14

f24

BEST-10.6-2ZM

2

30

24

6

7

14

M22x0.75

BEST-10.6-2.5Z

2.5

40

24

 

5.6

14

f24

BEST-10.6-2.5ZM

2.5

40

24

6

5.6

14

M22x0.75

BEST-10.6-3Z

3

50

24

 

5.3

16

f24

BEST-10.6-3ZM

3

50

24

6

5.3

16

M22x0.75

BEST-10.6-4Z

4

69.7

31

 

5.75

23

f31

BEST-10.6-4ZM

4

69.7

31

6

5.75

23

M22x0.75

BEST-10.6-5Z

5

89.8

31

 

4.6

23

f33

BEST-10.6-5ZM

5

89.8

31

6

4.6

23

M22x0.75

 

Trumpet-shape fixed beam expander

Model

Expansion ratio (times)

L

(mm)

D

(mm)

l

(mm)

Input clear aperture (mm)

Output clear aperture ( mm )

Connection

(mm)

BEST-10.6-2ZL

2

30

24

11.5

7

14

D24/d18

BEST-10.6-2ZLM

2

30

24

6

7

14

M22x0.75

BEST-10.6-2.5ZL

2.5

40

24

15.5

5.6

14

D24/d18

BEST-10.6-2.5ZLM

2.5

40

24

6

5.6

14

M22x0.75

BEST-10.6-3ZL

3

50

24

19

5.3

16

D24/d18

BEST-10.6-3ZLM

3

50

24

6

5.3

16

M22x0.75

BEST-10.6-4ZL

4

69.7

31

26.5

5.75

23

D31/d25

BEST-10.6-4ZLM

4

69.7

31

6

5.75

23

M22x0.75

BEST-10.6-5ZL

5

89.8

31

34

4.6

23

D33/d25

BEST-10.6-5ZLM

5

89.8

31

6

4.6

23

M22x0.75

 

ZnSe-based Fixed Beam Expander: - W Series

  Part No.

Magnification

Input CA (mm)

Output CA (mm)

O.D Dia1 (mm)

O.D Dia2 (mm)

L1 (mm)

L2 (mm)

BEST-9.4-2X-W

2

16.5

23

M22X0.75

28

59

54

BEST-9.4-3X-W

3

10

20

28

28

61

51.5

BEST-9.4-5X-W

5

13

23

20

30

72

42

BEST-10.6-1.5-W

1.5

13

16

20

-

35

-

BEST-10.6-2-W

2

10

15

22

-

32.5

-

BEST-10.6-2A-W

2

15

17

22

-

35

-

BEST-10.6-2L-W

2

27

53

M44X1

63

72

47

BEST-10.6-2.5-W

2.5

12

20

27

-

54

-

BEST-10.6-3A-W

3

10

15

20

20

61

-

BEST-10.6-3B-W

3

12.5

20

20

28

59

29

BEST-10.6-3C-W

3

13

20

20

28

110

60

BEST-10.6-3X-W

3

11

16

20

20

59

-

BEST-10.6-3.3-W

3.3

10

15

21

21

67

-

BEST-10.6-4-W

4

10

20

20

28

67

46

BEST-10.6-4A-W

4

10

25

20

31

67

48

BEST-10.6-4C-W

4

12

23

20

30

135

90

BEST-10.6-5-W

5

12

23

20

30

72

47

BEST-10.6-5A-W

5

12

28

20

36

70

45

BEST-10.6-6A-W

6

10

28

20

36

75

55

BEST-10.6-8-W

8

13

26

20

36

120

75.1

BEST-10.6-8A-W

8

10

30

20

36

73

55.5

 

 (2) Adjustable Beam Expanders

 

These beam expanders are designed specially for large divergent laser beam.  Changing the distance between two lenses inside the beam expander can decrease the beam divergence to obtain better collimation of the laser beam. If they are used for large-divergence laser beam, you may turn the inner body to increase the spacing of two lenses and then to obtain better collimation laser beam. The material is ZnSe and thus the red light can go through the beam expander.

 

Cylinder-shape adjustable beam expanders

Model

Expansion ratio

(times)

L

(mm)

D

(mm)

l

(mm)

Input clear aperture (mm)

Output clear aperture ( mm )

Connection

(mm)

BEST-10.6-2ZT

2

40

24

8

7

14

f24

   BEST-10.6-2ZTM

2

46

24

6

7

14

M22x0.75

BEST-10.6-2.5ZT

2.5

50

24

8

5.6

14

f24

  BEST-10.6-2.5ZTM

2.5

56

24

6

5.6

14

M22x0.75

BEST-10.6-3ZT

3

60

24

8

5.3

16

f24

  BEST-10.6-3ZTM

3

66

24

6

5.3

16

M22x0.75

BEST-10.6-4ZT

4

75.7

31

8

5.75

23

f31

BEST-10.6-4ZTM

4

79.7

31

6

5.75

23

M22x0.75

BEST-10.6-5ZT

5

95.8

31

8

4.6

23

f33

BEST-10.6-5ZTM

5

99.8

31

6

4.6

23

M22x0.75

 

Trumpet-shape adjustable beam expanders

Model

Expansion ratio

(times)

L

(mm)

D

(mm)

l

(mm)

Input clear aperture (mm)

Output clear aperture ( mm )

Connection

(mm)

BEST-10.6-2ZTL

2

40

24

8

7

14

f24

   BEST-10.6-2ZTLM

2

46

24

6

7

14

M22x0.75

BEST-10.6-2.5ZTL

2.5

50

24

8

5.6

14

f24

  BEST-10.6-2.5ZTLM

2.5

56

24

6

5.6

14

M22x0.75

BEST-10.6-3ZTL

3

60

24

8

5.3

16

f24

  BEST-10.6-3ZTLM

3

66

24

6

5.3

16

M22x0.75

BEST-10.6-4ZTL

4

75.7

31

8

5.75

23

f31

BEST-10.6-4ZTLM

4

79.7

31

6

5.75

23

M22x0.75

BEST-10.6-5ZTL

5

95.8

31

8

4.6

23

f33

BEST-10.6-5ZTLM

5

99.8

31

6

4.6

23

M22x0.75

 

ZnSe-based Adjustable Beam Expander: - TW Series

 

Part No.

Magnification

Input CA (mm)

Output CA (mm)

M1

Dia1 (mm)

Dia2 (mm)

L1 (mm)

L2 (mm)

BEST-10.6-2Z-TW

2

10

15

M16x0.75

22

22

37

51

BEST-10.6-2Z1-TW

2

10

23

M22x0.75

32

32

38

48

BEST-10.6-2ZG-TW

2

10

15

M16x0.75

22

22

40

51

BEST-10.6-2Z3-TW

2

15

28

M22x0.75

36

36

33

48

BEST-10.6-2Z4-TW

2

10

15

M16x0.75

20

20

37

50

BEST-10.6-2.5Z-TW

2.5

10

16

M16x0.75

20

20

45

55.2

BEST-10.6-2.5Z1-TW

2.5

10

15

M16x0.75

20

20

25

34

BEST-10.6-2.5Z2-TW

2.5

10

20

M22x0.75

28

28

40.5

56

BEST-10.6-3X3T-TW

3

10

16

M16x0.75

-

20

28

37

BEST-10.6-3Z1-TW

3

10

16

M16x0.75

20

20

45

61

BEST-10.6-3Z2-TW

3

10

20

M22x0.75

28

28

47

61

BEST-10.6-3Z3-TW

3

10

16

M16x0.75

20

20

28

37

BEST-10.6-3Z4/1-TW

3

10

25

M22x0.75

32

32

43

60

BEST-10.6-3Z5-TW

3

15

35

M22x0.75

44

44

60

73

BEST-10.6-3Z6-TW

3

15

28

M22x0.75

36

36

51

60

BEST-10.6-3.75Z-TW

3.75

23

26

M33x0.5

36

36

48

64

BEST-10.6-4X-TW

4

11

17

-

M24x0.5

26

51.5

66

BEST-10.6-4Z-TW

4

10

16

M16x0.75

20

20

47

55

BEST-10.6-4Z1-TW

4

10

20

M22x0.75

28

28

55

71

BEST-10.6-4Z2-TW

4

15

28

M22x0.75

36

36

51

66

BEST-10.6-4Z3-TW

4

10

20

-

26

32

50

70

BEST-10.6-5Z-TW

5

10

16

M16x0.75

20

20

43

58

BEST-10.6-5Z1-TW

5

10

23

M22x0.75

30

30

56

71

BEST-10.6-6Z-TW

6

11

26

M22x0.75

32

32

62

76

BEST-10.6-6Z1-TW

6

10

35

M22x0.75

44

44

60

75

BEST-10.6-6Z2-TW

6

10

15

M16x0.75

20

20

45

60

BEST-10.6-8Z1-TW

8

10

33

M22x0.75

44

44

98

118

BEST-10.6-10Z1-TW

10

10

36

M22x0.75

44

44

98

118

 

 (3) High-power CO2 Laser Beam Expanders

 

A: CBE Series Compact Beam Expanders

 

The high-power beam expander has a slide and lock focus setting. Normally this is set to infinity during manufacture. However, if a customer needs to adjust this to suit their system, the output should be coupled an adjustable pipe so this too can be adjusted to maintain an overall fixed length. Note that your input beam diameter should not exceed two-thirds of the input aperture. The output clear aperture is the same for all magnifications, 25mm. If your expanded beam diameter is 14.5mm to 22mm, the allowed input laser power can reach up to 500W. The input end has a M29 x 1.0 male thread and the output has the same female thread to take thread adaptors for coupling to other.

  

 

 

Part No.

Mag.

Input clear aperture

Max. input beam diameter

BEST-10.6-1.3ZTM-CBE

1.3

12.5mm

10mm

BEST-10.6-1.6ZTM-CBE

1.6

12.5mm

10mm

BEST-10.6-2ZTM-CBE

2

12.5mm

10mm

BEST-10.6-2.5ZTM-CBE

2.5

12.5mm

8mm

BEST-10.6-3ZTM-CBE

3

12.5mm

6mm

BEST-10.6-3.5ZTM-CBE

3.5

12.5mm

5mm

BEST-10.6-4ZTM-CBE

4

12.5mm

4.5mm

BEST-10.6-5ZTM-CBE

5

12.5mm

3.5mm

BEST-10.6-6ZTM-CBE

6

12.0mm

3.0mm

BEST-10.6-7ZTM-CBE

7

10.0mm

2.5mm

BEST-10.6-8ZTM-CBE

8

10.0mm

2.1mm

BEST-10.6-10ZTM-CBE

10

5.0mm

1.7mm

BEST-10.6-12ZTM-CBE

12

5.0mm

1.4mm

 

B: SBE Series Beam Expanders

 

The SBE series of beam expanders are designed for use with CO2 lasers of (relatively) small beam diameter, between the limits of around 2mm up to 12mm, and for power levels of up to 1kW CW. SBE units may be used to increase beam size, and reduce laser divergence accordingly. A wide range of magnifications is available to enable best performance to be obtained from the laser. The SBE series of beam expanders are of Galilean type, with two ZnSe lenses. The lenses are made from laser grade ZnSe and treated with ultra-low absorption anti-reflection coatings for 10.6μm. All models are externally identical.

 

The focus range is from -10 metres, through infinity, to +1.6 metres. It is factory calibrated from infinity to +2 metres focus range. Please note that the indicated focus is geometrical, and the actual downstream beam waist position will depend upon the parameters of the laser beam. The focus mechanism is of the actuated-slide type, and actuation of the focusing ring drives the output lens position in a linear, non-rotary sense. This mechanism reduces beam wander usually experienced with rotary focus mechanisms.

 

Model

Magnification

Input Clear Ap.

Output Clear Ap.

BEST-10.6-2ZTM-SBE

x2.0

12.50mm

25.4mm

BEST-10.6-2.5ZTM-SBE

x2.5

10.20mm

25.4mm

BEST-10.6-3ZTM-SBE

x3.0

8.33mm

25.4mm

BEST-10.6-4ZTM-SBE

x4.0

6.25mm

25.4mm

BEST-10.6-5ZTM-SBE

x5.0

5.00mm

25.4mm

BEST-10.6-6ZTM-SBE

x6.0

4.17mm

25.4mm

BEST-10.6-7ZTM-SBE

x7.0

3.57mm

25.4mm

 

The SBE series beam expanders can be used to reduce beam divergence and to help achieve very high energy densities from quite low laser power. For example, if used with a 10W Synrad laser, a model SBE/60 plus a TF25 focusing lens, would generate an energy density of around 20kW/mm² at the focus. Typical applications for the SBE series beam expanders with low power lasers include drilling holes in plastics, cutting paper and card, cutting man-made fibre material and rubber, and engraving decorative wooden plaques. In common with other beam expanders, the SBE series can provide a long-path of consistant beam quality. They may be used in conjunction with moderate power (several hundred watts) CO2 lasers to enable large cutting bed applications, such as the processing of sail-cloth.

 

 

C: BE25 Series Beam Expanders

 

The BE25 series of beam expanders is designed for use with CO2 lasers of up to 2kW CW power. The units are water cooled and incorporate an actuated-slide focusing mechanism to reduce beam wander during focusing. By reducing beam divergence and allowing the user control over the ongoing beam characteristics, these industrial laser beam expanders can improve system Performance, especially in large moving-optics systems.

 

Technical specifications:

Type: Fully corrected Galilean type, with ZnSe lenses.

Construction: Aluminium alloy, black anodised. Lenses mounted using indium wire to aid heat transfer.

Cooling: Water (or air) cooled, via 8/6 size fittings.

Focus range: From infinity down to 2.8 metres. Calibrated.

Beam wander during focusing: 2 minutes of arc over full range.

Output clear aperture: 35mm diameter.

Fitting: Via standard 52.0 dia x 1.5 pitch coupling ring.

 

Model

Magnification

Input Clear Aperture Dia.

BEST-10.6-1.33ZTM-BE25

x 1.33

25.0mm

BEST-10.6-1.5ZTM-BE25

x 1.50

23.2mm

BEST-10.6-1.66ZTM-BE25

x 1.66

21.1mm

BEST-10.6-1.75ZTM-BE25

x 1.75

20.0mm

BEST-10.6-2ZTM-BE25

x 2.00

17.5mm

 

The actuated-slide mechanism drives the output lens in a linear motion, reducing beam wander that can occur in rotary mechanisms. The geometrical focus setting is calibrated from 2.8m to infinity. Please note that the downstream beam waist position will depend upon the laser beam characteristics as well as the focus setting. Geometrical focus is calibrated for a plane wave input.

 

The specific applications for the BE25 series beam expanders are too numerous to list. In general, they are used by many system integrators in moving-optics cutting systems, long-bed anilox processing and a variety of systems where a controlled beam and increased focused energy density are desirable.

 

 

D: BE38 Series Beam Expanders

 

The BE38 series of beam expanders is designed for use with high power/large beam diameter CO2 lasers of up to 3kW power CW. These Galilean beam expanders use two ZnSe lens elements made from laser grade ZnSe and treated with ultra-low absorption anti-reflection coatings for maximum power handling capacity. BE38 series beam expanders use an actuated-slide focus mechanism to reduce beam wander during focusing. The units are water cooled. Use of these beam expanders can improve system performance by reduction of the beam far-field divergence and by providing control of the ongoing beam parameters.

 

Technical specifications:

Type : Fully corrected Galilean type, ZnSe lenses.

Construction : Aluminium alloy, black anodised. The lenses are mounted using indium wire to aid heat transfer.

Cooling : Water cooled via 8/6 size fittings.

Focus range : From infinity down to 2.8 metres. Calibrated.

Output clear aperture : 57mm diameter.

Input clear aperture : 38mm diameter.

Fitting : Via 70.0mm x 1.5 pitch connector ring.

Beam wander during focusing : 2 arc minutes over full range.

 

Model

Magnification

BEST-10.6-1.15ZTM-BE38

x 1.15

BEST-10.6-1.25ZTM-BE38

x 1.25

BEST-10.6-1.33ZTM-BE38

x 1.33

BEST-10.6-1.5ZTM-BE38

x 1.50

 

The actuated-slide mechanism causes the output lens to be linearly repositioned when the focus control ring is rotated. This reduces the beam wander that can occur with rotary focus mechanisms. The geometrical focus position is calibrated from 2.8 metres to infinity. Please note that the downstream beam waist position will, in general, be different from the geometrical focus setting. The geometrical focus is calibrated for a plane wave input.

 

 2. Nd:YAG Laser Beam Expanders (1064nm, 532nm & 355nm)

  

Screw connection, lenses' distance adjustable                       Cylinder shape, lenses' distance adjustable

 

1064nm beam expanders

P/N

Wave-length

(nm)

Expansion ratio (times)

Input clear aperture (mm)

Output clear aperture (mm)

Out diameter

(mm)

length

 (mm)

connection
(mm)

BEST-1064-1.5T

1064

1.5

10

21.6

25

20

f25

BEST-1064-2M

1064

2

10

28

34

87

M22x0.75

BEST-1064-2.5T

1064

2.5

10

21.6

25

49.3

f25

BEST-1064-2.5

1064

2.5

15

28

36

60

f36

BEST-1064-2.5T-A

1064

2.5

15

28

36

63

f36

BEST-1064-3M

1064

3

10

28

34

70.5

M22x0.75

BEST-1064-3M-2

1064

3

10

28

34

66.5

M22x0.75

BEST-1064-3

1064

3

15

32

42

77

f30 or f42

BEST-1064-3T

1064

3

15

32

42

80

f30 or f42

BEST-1064-4M

1064

4

10

28

34

76.5

M22x0.75

BEST-1064-4M-2

1064

4

10

28

34

62

M22x0.75

BEST-1064-4M-3

1064

4

10

28

34

72.5

M22x0.75

BEST-1064-4M-4

1064

4

10

28

34

58

M22x0.75

BEST-1064-4T

1064

4

11

21.6

25

64

f25

BEST-1064-5M

1064

5

10

28

34

80

M22x0.75

BEST-1064-5MT

1064

5

10

28

34

80

M22x0.75

BEST-1064-5T

1064

5

11

21.6

25

64

f25

BEST-1064-6M

1064

6

10

28

34

81.5

M22x0.75

BEST-1064-6M-2

1064

6

10

28

34

83.5

M22x0.75

BEST-1064-6M-3

1064

6

10

28

39

95

M22x0.75

BEST-1064-6M-4

1064

6

12

34

42

80

M30x1

BEST-1064-6M-5

1064

6

10

46

53

90.5

M30x1

BEST-1064-6M-6

1064

6

10

28

39

95

M22x0.75 or f39

BEST-1064-6T

1064

6

11

21.6

25

64

f25

BEST-1064-8M

1064

8

10

28

34

87

M22x0.75

BEST-1064-8M-2

1064

8

10

46

53

90.5

M30x1

BEST-1064-10M

1064

10

11

28

36

87

M30x1

BEST-1064-10M-2

1064

10

10

28

34

90

M22x0.75

BEST-1064-15M

1064

15

11

34

40

102

M30x1

BEST-1064-20M

1064

20

11

34

40

102

M30x1

 

532nm beam expanders

P/N

Wave-length

(nm)

Expansion ratio (times)

Input clear aperture (mm)

Output clear aperture (mm)

Out diameter

(mm)

length

 (mm)

connection
(mm)

BEST-532-1.5T

532

1.5

10

21.6

25

20

f25

BEST-532-2M

532

2

10

28

34

87

M22x0.75

BEST-532-2.5T

532

2.5

10

21.6

25

49.3

f25

BEST-532-2.5

532

2.5

15

28

36

60

f36

BEST-532-2.5T-A

532

2.5

15

28

36

63

f36

BEST-532-3M

532

3

10

28

34

70.5

M22x0.75

BEST-532-3M-2

532

3

10

28

34

66.5

M22x0.75

BEST-532-3

532

3

15

32

42

77

f30 or f42

BEST-532-3T

532

3

15

32

42

80

f30 or f42

BEST-532-4M

532

4

10

28

34

76.5

M22x0.75

BEST-532-4M-2

532

4

10

28

34

62

M22x0.75

BEST-532-4M-3

532

4

10

28

34

72.5

M22x0.75

BEST-532-4M-4

532

4

10

28

34

58

M22x0.75

BEST-532-4T

532

4

11

21.6

25

64

f25

BEST-532-5M

532

5

10

28

34

80

M22x0.75

BEST-532-5M

532

5

10

28

34

80

M22x0.75

BEST-532-5MT 532 5 10 28 34 80 M22x0.75

BEST-532-5T

532

5

11

21.6

25

64

f25

BEST-532-6M

532

6

10

28

34

81.5

M22x0.75

BEST-532-6M-2

532

6

10

28

34

83.5

M22x0.75

BEST-532-6M-3

532

6

10

28

39

95

M22x0.75

BEST-532-6M-4

532

6

12

34

42

80

M30x1

BEST-532-6M-5

532

6

10

46

53

90.5

M30x1

BEST-532-6M-6

532

6

10

28

39

95

M22x0.75 or f39

BEST-532-6T

532

6

11

21.6

25

64

f25

BEST-532-8M

532

8

10

28

34

87

M22x0.75

BEST-532-8M-2

532

8

10

46

53

90.5

M30x1

BEST-532-10M

532

10

11

28

36

87

M30x1

BEST-532-10M-2

532

10

10

28

34

90

M22x0.75

BEST-532-15M

532

15

11

34

40

102

M30x1

BEST-532-20M

532

20

11

34

40

102

M30x1

 

355nm beam expanders

P/N

Wave-length

(nm)

Expansion ratio (times)

Input clear aperture (mm)

Output clear aperture (mm)

Out diameter

(mm)

length

 (mm)

connection
(mm)

BEST-355-4T

355

4

11

21.6

25

64

f25

BEST-355-6T

355

6

11

21.6

25

66

f25

BEST-355-8T

355

8

11

21.6

25

68

f25

Remark: the dimensions of 532nm and 1064nm beam expanders at same models/expansions are same.

 

3. BEST Series HeNe Laser Beam Expanders (633nm)

 

P/N

Expansion ratio (times)

Input clear aperture (mm)

Output clear aperture (mm)

Out diameter

(mm)

length

 (mm)

connection
(mm)

BEST-633-3

3

10

28

34

66.5

M22x0.75

BEST-633-5

5

10

28

34

76.5

M22x0.75

BEST-633-10

10

11

28

34

87

M30x1

BEST-633-20

20

8

78

89

173

M30x1

 

STS Series Beam Expanders

 

Our beam expanders with fixed expansion factor offer certain advantages compared to systems consisting of only two single lenses. For collimation, we use an air spaced two lens system in order to minimize aberrations and reach diffraction limited performance. In addition, the divergence of the expanded beam can be easily adjusted. The design is a Galilean type, i.e. there is no internal focus and the system length is short, compared to a Kepler type system. New is the compact version with a length of 44.7 mm only.

 

 

For remote controlled setting, we developed motorized versions of our beam expanders. For standard systems, a motor adapter can be incorporated to drive the mechanics used for divergence setting.

 

 

1030 nm - 1090 nm - FUSED SILICA

part number

1064nm

standard

part number

1030-1090 nm

low absorption

part number motorized

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside[mm]

STS-0015/126

STS-0015/328

STS-0015/xxx1

1.5x

6.0

30.0

85.0

46.0

STS-0020/126

STS-0020/328

STS-0020/xxx1

2.0x

6.0

30.0

85.0

46.0

STS-0025/126

STS-0025/328

STS-0025/xxx1

2.5x

6.0

30.0

85.0

46.0

STS-0030/126

STS-0030/328

STS-0030/xxx1

3.0x

6.0

30.0

85.0

46.0

STS-0040/126

STS-0040/328

STS-0040/xxx1

4.0x

6.0

30.0

85.0

46.0

STS-0050/126

STS-0050/328

STS-0050/xxx1

5.0x

5.0

30.0

85.0

46.0

STS-0060/126

STS-0060/328

STS-0060/xxx1

6.0x

4.0

30.0

85.0

46.0

STS-0070/126

STS-0070/328

STS-0070/xxx1

7.0x

3.5

30.0

85.0

46.0

STS-0080/126

STS-0080/328

STS-0080/xxx1

8.0x

3.5

30.0

85.0

46.0

STS-0090/126

STS-0090/328

STS-0090/xxx1

9.0x

3.0

30.0

85.0

46.0

STS-0100/126

STS-0100/328

STS-0100/xxx1

10.0x

3.0

30.0

85.0

46.0

STS-0120/126

STS-0120/328

STS-0120/xxx1

12.0x

2.5

30.0

85.0

46.0

STS-0150/126

STS-0150/328

STS-0150/xxx1

15.0x

2.0

30.0

85.0

46.0

STS-0200/126

STS-0200/328

STS-0200/xxx1

20.0x

1.5

30.0

85.0

46.0

* At divergence setting “0“. Max. lengthening of 3 mm is possible

1 Available coatings are /126 or /328

 

1030 nm - 1090 nm  COMPACT VERSION - FUSED SILICA

1064nm

standard

part number

1030-1090 nm

low absorption

magnification

max. entrance[mm]

max. exit

[mm]

length*

[mm]

max. outside[mm]

STS-0008/126

STS-0008/328

0.8x

10.0

12.0

44.7

46.0

STS-0012/126

STS-0012/328

1.2x

12.0

26.0

44.7

46.0

STS-0015/126

STS-0015/328

1.5x

11.0

26.0

44.7

46.0

STS-0020/126

STS-0020/328

2.0x

6.0

26.0

44.7

46.0

STS-0030/126

STS-0030/328

3.0x

6.0

26.0

44.7

46.0

STS-0040/126

STS-0040/328

4.0x

5.0

20.0

44.7

46.0

* At divergence setting “0“. Max. lengthening of 3 mm is possible

 

1030 nm - 1090 nm “ALPHA “ for HIGH POWER LASER - FUSED SILICA

part number

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside [mm]

STS-0807/328

1.1x

24.0

50.0

85.5

77.0

STS-0812/328

1.2x

24.0

50.0

85.5

77.0

STS-3116/328

1.5x

24.0

50.0

85.5

77.0

STS-0884/328

1.8x

24.0

50.0

85.5

77.0

STS-3121/328

2.0x

24.0

50.0

121.7

77.0

STS-3126/328

2.5x

20.0

50.0

139.9

77.0

STS-3132/328

3.0x

16.0

50.0

151.7

77.0

 * ALPHA means  Absorption Low Plus High Aperture.

 

1064 nm – FOR HIGH APERTURES - OPTICAL GLASS

part number

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside

[mm]

STS-0815/126

1.5x

15.0

30.0

85.0

46.0

STS-0820/126

2.0x

15.0

30.0

85.0

46.0

STS-0830/126

3.0x

10.0

30.0

90.0

46.0

STS-2071/126

4.0x

10.0

50.0

106.0

77.0

STS-2070/126

6.0x

8.0

50.0

106.0

77.0

  * At divergence setting “0“. Max. lengthening of 3 mm is possible

 

808 nm - 980 nm - FUSED SILICA

part number

standard

part number

motorised

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside

[mm]

STS-0020/094

STS-0020/094

2.0x

6.0

30.0

85.0

46.0

STS-0030/094

STS-0030/094

3.0x

6.0

30.0

85.0

46.0

STS-0050/094

STS-0050/094

5.0x

6.0

30.0

85.0

46.0

STS-0100/094

STS-0100/094

10.0x

3.0

30.0

85.0

46.0

 * At divergence setting “0“. Max. lengthening of 3 mm is possible

 

515 nm - 545 nm - FUSED SILICA

Part number

532nm

standard

Part number

515-545nm,

Low absorption

Part number

motorised

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside

[mm]

STS-0015/121

STS-0015/292

STS-0015/xxx1

1.5x

6.0

30.0

85.0

46.0

STS-0020/121

STS-0020/292

STS-0020/xxx1

2.0x

6.0

30.0

85.0

46.0

STS-0025/121

STS-0025/292

STS-0025/xxx1

2.5x

6.0

30.0

85.0

46.0

STS-0030/121

STS-0030/292

STS-0030/xxx1

3.0x

6.0

30.0

85.0

46.0

STS-0040/121

STS-0040/292

STS-0040/xxx1

4.0x

6.0

30.0

85.0

46.0

STS-0050/121

STS-0050/292

STS-0050/xxx1

5.0x

5.0

30.0

85.0

46.0

STS-0060/121

STS-0060/292

STS-0060/xxx1

6.0x

4.0

30.0

85.0

46.0

STS-0070/121

STS-0070/292

STS-0070/xxx1

7.0x

3.5

30.0

85.0

46.0

STS-0080/121

STS-0080/292

STS-0080/xxx1

8.0x

3.5

30.0

85.0

46.0

STS-0090/121

STS-0090/292

STS-0090/xxx1

9.0x

3.0

30.0

85.0

46.0

STS-0100/121

STS-0100/292

STS-0100/xxx1

10.0x

3.0

30.0

85.0

46.0

STS-0120/121

STS-0120/292

STS-0120/xxx1

12.0x

2.5

30.0

85.0

46.0

STS-0150/121

STS-0150/292

STS-0150/xxx1

15.0x

2.0

30.0

85.0

46.0

STS-0200/121

STS-0200/292

STS-0200/xxx1

20.0x

1.5

30.0

85.0

46.0

* At divergence setting “0“. Max. lengthening of 3 mm is possible

1 Available coatings are /121 or /292

 

515 nm - 545 nm - COMPACT VERSION - FUSED SILICA

Part number

standard

Part number

Low absorption

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside [mm]

STS-0008/121

STS-0008/292

0.8x

10.0

12.0

44.7

46.0

STS-0012/121

STS-0012/292

1.2x

10.0

26.0

44.7

46.0

STS-0015/121

STS-0015/292

1.5x

11.0

26.0

44.7

46.0

STS-0020/121

STS-0020/292

2.0x

6.0

26.0

44.7

46.0

STS-0030/121

STS-0030/292

3.0x

6.0

26.0

44.7

46.0

STS-0040/121

STS-0040/292

4.0x

5.0

20.0

44.7

46.0

* At divergence setting “0“. Max. lengthening of 3 mm is possible

 

405 nm - FUSED SILICA

Part number

standard

Part number

motorised

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside [mm]

STS-0015/173

STS-0015/173

1.5x

6.0

30.0

85.0

46.0

STS-0020/173

STS-0020/173

2.0x

6.0

30.0

85.0

46.0

STS-0030/173

STS-0030/173

3.0x

6.0

30.0

85.0

46.0

STS-0050/173

STS-0050/173

5.0x

6.0

30.0

85.0

46.0

STS-0070/173

STS-0070/173

7.0x

4.2

30.0

85.0

46.0

STS-0100/173

STS-0100/173

10.0x

2.5

25.0

88.4

46.0

STS-0200/173

STS-0200/173

20.0x

1.5

30.0

95.0

46.0

* At divergence setting “0“. Max. lengthening of 3 mm is possible

 

355 nm - FUSED SILICA

Part number

standard

Part number

motorised

magnification

max. entrance [mm]

max. exit [mm]

length*

[mm]

max. outside [mm]

STS-0015/075

STS-0015/075

1.5x

6.0

30.0

85.0

46.0

STS-0020/075

STS-0020/075

2.0x

6.0

30.0

85.0

46.0

STS-0025/075

STS-0025/075

2.5x

6.0

30.0

85.0

46.0

STS-0030/075

STS-0030/075

3.0x

6.0

30.0

85.0