An acousto-optic tunable filter (AOTF) is a solid-state, electronically-addressable random-access optical pass-band filter. It may be used to rapidly and dynamically select a specific wavelength from a broadband or multi-line source. When specific matching conditions between the acoustic and optical beams are met, diffraction will occur. As a result it is possible to electronically control key filter parameters such as wavelength, modulation-depth and even bandwidth, thus providing rapid (typically μs), dynamic, random access optical filtering.
Resolution bandwidths down to <0.1% are available with exceptional performance and with aperture sizes up to 25 mm and beyond. We have developed and patented techniques to allow us to offer options such as large-aperture imaging filtering, sideband suppression, and transmission of multiple discrete wavelengths.
We offer a range of AOTFs to suit a variety of applications. For scanning an entire image in wavelength at speeds sufficient for real-time video rate spectral imaging, high optical throughput is required. For this purpose devices with large aperture and/or field of view are recommended.

 

Model	Wavelength	Active Aperture	Resolution
AOTF 2837-31	351-430 nm	2.5 mm	1.0 nm
AOTF 3151-01	400-650 nm	2.5 mm	2.5 nm
TF525-250-6-3-GH19A	400-650 nm	3 mm	5 nm
TF525-250-4-6-GH57A	400-700 nm	6 mm	4 nm
TF560-280-1-5-NT2	420-700 nm	5 mm	0.3 nm
AOTF 2838-01	450-670 nm	2.5 mm	1.3 nm
AOTF 2885-02	450-670 nm	2.5 mm	2 nm
AOTF 2885-04	450-670 nm	2.5 mm	4 nm
TF625-350-2-11-BR1A	450-800 nm	11 mm	1.5 nm
TF850-500-1-3-PF3	600-1100 nm	3 mm	1.5 nm
TF850-500-10-6-GH58A	600-1100 nm	6 mm	10 nm
AOTF 2986-01	640-1100 nm	2.5 mm	5 nm
TF925-550-10-3-GH29A	650-1200 nm	3 mm	9 nm
TF950-500-1-2-GH96	700-1200 nm	2 mm	0.6 nm
TF950-500-0.3-3-GH98	700-1200 nm	3 mm	0.3 nm
TF950-500-1-5-NT2	700-1200 nm	5 mm	0.8 nm
TF1300-800-16-11-NO1A	900-1700 nm	11 mm	16 nm
TF2270-2560-5-5-GH65	990-3550 nm	5 mm	5 nm
AOTF 2996-01	1100-2000 nm	2.5 mm	12 nm
TF1650-1100-2-3-GH40	1100-2200 nm	3 mm	1.6 nm
TF1650-1100-9-3-GH30A	1100-2200 nm	3 mm	8 nm
TF1875-1250-10-6-GH59A 1	250-2500 nm	6 mm	10 nm
TF1900-1100-6-11-GH54A	1300-2500 nm	11 mm	6 nm
TF1900-1100-6-25-GH87A	1350-2450 nm	25 mm	6 nm
TF2000-1000-2-6-GH78	1500-2500 nm	6 mm	1.2 nm
TF2250-1500-12-7-GH61A	1500-3000 nm	7 mm	12 nm
TF2900-2200-5-3-GH40	1800-4000 nm	3 mm	5 nm
TF3000-2000-3-7-GH78	2000-4000 nm	7 mm	2.6 nm
TF3300-2200-xxx	2200-4400 nm	Up to 15 mm	Varies

The STBR series Dynamic Tunable Bandpass Filter adjusts the center wavelength of a narrow band of light over a 100 - 200nm range. It offers very high resolution of ~1.5nm and either single or simultaneous multiple wavelength selection. It is able to precisely and rapidly adjust the wavelength and intensity of the diffracted/filtered light by varying the frequency (see graph) and RF power. We offer both free-space and fiber-coupled configurations. AOTFs are used widely in numerous optical systems and applications, especially in industrial or process control near-infrared (NIR) spectroscopy applications.

* Available in low or standard solution

Material:
TE � Tellerium Dioxide (350-5000 nm)
QZ � Quartz (SiO2)
Options:
S � Standard Resolution
H � High Resolution
EX � Extra high Resolution
UH � Ultra high Resolutiontandard resolution.