| 相干激光雷达接收机混频效率 |
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| 引用本文： | 马宗峰,张春熹,高爽,罗光明.相干激光雷达接收机混频效率[J].光学技术,2006,32(Z1). |
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| 作者姓名： | 马宗峰 张春熹 高爽 罗光明 |
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| 摘 要： | 相干激光雷达接收机中,信号光为平面光经衍射形成的艾里斑,本振光为基模高斯光束,在文章中对两者在探测器光敏面上混频的混频效率进行了讨论。对于给定的信号光,若满足fλd21,那么高斯光束束腰半径取0.781fλ/d、探测器半径取1.130fλ/d时获得最大混频效率0.834,这一最佳混频可以通过离焦式扩束望远镜调节高斯光束束腰半径的大小与位置来实现。
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| 关 键 词： | 激光雷达 混频效率 波前匹配 高斯光束 |
Mixing efficiency in coherent lidar receiver |
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| MA Zong-feng,ZHANG Chun-xi,GAO Shuang,LUO Guang-ming.Mixing efficiency in coherent lidar receiver[J].Optical Technique,2006,32(Z1). |
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| Authors: | MA Zong-feng ZHANG Chun-xi GAO Shuang LUO Guang-ming |
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| Abstract: | The mixing efficiency in coherent lidar of an Airy signal field with a Gaussian local-oscillator(LO)is discussed with the consideration of the effect of wavefront matching of both fields.The parameters of LO are derived for given signal to maximizes the mixing efficiency.The maximum mixing efficiency can be obtained by applying a focus-off telescope to adjust the width and position of Gaussian beam waist. |
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| Keywords: | lidar mixing efficiency wavefront matching Gaussian beam |
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