| The Optical Characteristics of the Acousto-optic Tunable Filter with the Equivalent Point |
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| 作者姓名： | XU Kexin NI Yong XUE Bin JIANG Chengzhi HU Xiaotang |
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| 作者单位： | State Key Laboratory of Precision Measuring Technology and Instruments，Tianjin University，Tianjin 300072，China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (60077010)，the Natural Science Foundation of Tianjin City (003800311). |
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| 摘 要： | 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.
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| 收稿时间： | 2001/3/29 |
The Optical Characteristics of the Acousto-optic Tunable Filter with the Equivalent Point |
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| 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):133-138. |
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| Authors: | XU Kexin NI Yong XUE Bin JIANG Chengzhi HU Xiaotang |
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| 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. |
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| Keywords: | equivalent point momentum matching AOTF TeO2 |
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