Chinese Journal of Lasers B, 2002, 11 (2): 133, 网络出版: 2006-08-08
The Optical Characteristics of the Acousto-optic Tunable Filter with the Equivalent Point
The Optical Characteristics of the Acousto-optic Tunable Filter with the Equivalent Point
摘要
Abstract
In this paper, the interaction curves of acoustic and optical waves in a non-collinear AOTF (acousto-optic tunable filter) cell under the parallel-tangent momentum matching condition are analyzed systematically. A new theory of equivalent point for AOTF design is put forward. The wavelength characteristics and the wavelength resolution of two diffraction beams with equivalent point design in AOTF are emphatically analyzed. The optical characteristics at δ=0 (ideal case) and δ≠0 (real case) are also discussed. The advantages of the AOTF with equivalent point design include high wavelength resolution,more quantitative energy and larger incident angle aperture.
XU Kexin, NI Yong, XUE Bin, JIANG Chengzhi, HU Xiaotang. The Optical Characteristics of the Acousto-optic Tunable Filter with the Equivalent Point[J]. Chinese Journal of Lasers B, 2002, 11(2): 133. XU Kexin, NI Yong, XUE Bin, JIANG Chengzhi, HU Xiaotang. The Optical Characteristics of the Acousto-optic Tunable Filter with the Equivalent Point[J]. 中国激光(英文版), 2002, 11(2): 133.