Open AccessAnalysis of the optimum optical incident angle for an imaging acousto-optic tunable filter
Author(s) -
Chunguang Zhang,
Zhonghua Zhang,
Hao Wang,
Yu Yang
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.011883
Subject(s) - optics , wavelength , bandwidth (computing) , materials science , figure of merit , filter (signal processing) , ray , optical filter , acceptance angle , physics , telecommunications , computer science , computer vision
The selection of the incident polar angle is very important in the entire design of the noncollinear acousto-optic tunable filter (AOTF). The authors discussed how the factors, including tuning range of wavelength, the acoustic frequency, the acousto-optic figure of merit, the spectral bandwidth, the spread of filtered beam and the wavelength dependence, influence the selection of the optimum incident polar angle. By an accurate theoretical analysis, a method of selecting the optimum incident angle was presented. The analysis was significant for improving the performance of the imaging AOTF from the visible to the infrared.