Study of the spectral bandwidth of a double-pass acousto-optic system

Justine Champagne (1) , Jean-Claude Kastelik (2, 3, 1, 4) , Samuel Dupont (1) , Joseph Gazalet (2, 3, 1)

1 IEMN-DOAE - Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520
2 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
3 OPTO - IEMN - Optoélectronique - IEMN
4 UVHC - Université de Valenciennes et du Hainaut-Cambrésis

Acousto-optic tunable filters are known as efficient instruments for spectral and spatial filtering of light. In this paper, we analyze the bandwidth dependence of a double-pass filter. The interaction geometry chosen allows the simultaneous diffraction of the ordinary and the extraordinary optical modes by a single ultrasonic frequency. We present the main parameters of a custom device (design, optical range, driving frequency) and experimental results concerning the angular deviation of the beams including the effect of optical birefringence. The spectral resolution and the side lobes' significance are discussed. Spectral bandwidth of such a system is analyzed. (C) 2018 Optical Society of America

Mots clés: Acoustooptic tunable filters; Birefringence; Diffraction efficiency; Spatial filtering; Spectral imaging; Tunable filters

Domaines: Sciences de l'ingénieur [physics]; Acoustique [physics.class-ph]; Optique / photonique

Justine Champagne, Jean-Claude Kastelik, Samuel Dupont, Joseph Gazalet. Study of the spectral bandwidth of a double-pass acousto-optic system. Applied optics, 2018, 57 (10), pp.C49-C55. ⟨10.1364/AO.57.000C49⟩. ⟨hal-03183500⟩