光学学报, 2014, 34 (8): 0828002, 网络出版: 2014-07-08
直视式合成孔径激光成像雷达电控抛物波面扫描器
Electrically Controlled Parabolic Wavefront Scanner in Down-Looking Synthetic Aperture Imaging Ladar
遥感 电光调制 抛物波面扫描器 直视式合成孔径激光成像雷达 线性调制 remote sensing electro-optic modulation parabolic wavefront scanner down-looking synthetic aperture imaging ladar linear modulation
摘要
研制了直视式合成孔径激光成像雷达(SAIL)电控抛物波面扫描器,该扫描器由线性相位调制的电光晶体和柱面镜构成,其中电光晶体采用4个三角形电极施加电场实现线性相位调制,具有体积小、响应速度快等优点。实验测试表明该直视式SAIL电控抛物波面扫描器获得了与理论吻合的抛物波面相位,扫描准确可控,很好地验证了该扫描器在直视式合成孔径激光成像雷达应用的有效性。
Abstract
Electrically controlled parabolic wavefront scanner in down-looking synthetic aperture imaging ladar (SAIL) is developed. The scanner is composed of electro-optic crystal and cylindrical lens with the advantages of small shape and high-speed. A linear phase modulation in electro-optic crystal is generated by four triangle electrodes. The systematical experiments confirm that the parabolic wavefront from the scanner agrees with the theoretical value well and is controlled accurately. The usefulness of the scanner is verified.
卢智勇, 孙建锋, 职亚楠, 周煜, 刘福川, 刘立人. 直视式合成孔径激光成像雷达电控抛物波面扫描器[J]. 光学学报, 2014, 34(8): 0828002. Lu Zhiyong, Sun Jianfeng, Zhi Ya′nan, Zhou Yu, Liu Fuchuan, Liu Liren. Electrically Controlled Parabolic Wavefront Scanner in Down-Looking Synthetic Aperture Imaging Ladar[J]. Acta Optica Sinica, 2014, 34(8): 0828002.