Acousto-Optic Tunable Filters

Tunable acousto-optic filters for broadband light sources such as white light lasers.

Supplier: Isomet

Technology type: Acousto-Optics

Isomet's electronically controlled acousto-optic filters (AOTF) are specially designed for use with broadband light sources and are often used with non-coherent and divergent light.

Tunable AOTFs make use of the inherent dependence of wavelength sensitivity in relation to so-called Bragg diffraction and thus enable specific wavelengths of broadband light sources to be filtered out by applying different radio frequencies (RF). Corresponding RF drivers are also available.

Wavelength range: VIS, NIR, and mid-IR
Tunable filters and line filters
Fast switching times and fine spectral bandwidths for the selection of discrete laser wavelengths from multi-line laser sources
Active apertures from 2.5x2.5mm² up to 10x10mm²
Acceptance angle of 2.5° up to 6°

Low input angular sensitivity
High wavelength selectivity
Intensity modulation through the level of HF power
Suitable synthesisers also with an integrated amplifier

What's in this range?

All the variants in the range and a comparison of what they offer

Model	Spectral range [nm]	Active aperture [mm²]	Acceptance angle [Deg.]	Optical bandwidth [nm]	Drive frequency [MHz]
AOLF615-1046	VIS	2.5 x 2.5	3.5 - 4.5	1.0 - 6.0	109 - 65
AOLF615-1082	VIS	2.5 x 2.5	3.5 - 4.5	1.0 - 6.0	109 - 65
AOTF614-08	VIS, NIR	5 x 5	3.5 - 6.0	1.0 - 22.0	140 - 35
AOTF614-16	VIS, NIR	5 x 5	2.5 - 4.2	0.6 - 11.0	140 - 35
AOTF614-24	VIS, NIR	5 x 5	3.5 - 6.0	0.4 - 7.0	140 - 35
AOTF1110-VB	VIS, NIR	10 x 10	5.7 (nominal)	Variable	80 - 50
AOTF920-14	NIR	5 x 5	3.4 - 6.1	2.0 - 27.0	95 - 26
AOTF920-20	NIR	5 x 5	2.6 - 4.9	1.5 - 18.5	95 - 26
AOTF920-24	NIR	5 x 5	2.8 - 5.0	1.0 - 15.5	95 - 26
AOTF-1550-SLS	1550	3 x 3	-	2.0	81 - 84
AOTF-1331	2500 – 4000	7 x 7	5	30 - 50	24 - 39