提出了用作近红外高光谱分辨率激光雷达(HSRL)光谱滤波器的视场展宽迈克尔孙干涉仪(FWMI)的设计方法。详细给出了FWMI的设计理论和设计指标的确定过程,通过视场补偿及热补偿设计,使FWMI能在一定温度范围内保证较大的入射视场。给出了针对近红外FWMI的设计结果。性能评估表明,所设计的FWMI可接收的视场角大于2°,并在(20±0.5)℃的温度范围内具有几乎不变的工作性能。最后通过容差分析,保证了该设计结果能满足现有的加工工艺。该设计过程和方法对FWMI的设计加工具有一定的指导意义。
A design method of field-widened Michelson interferometer(FWMI)applied as the spectroscopic filter for high spectral resolution lidars(HSRLs)is proposed.The theoretical principles and design criteria are described in detail.Making use of the field-widen and thermal compensation conditions,the FWMI can achieve large incident field within a certain temperature range.The design result of the near-infrared FWMI is provided.The performance analysis of designed FWMI indicates that its available incident divergence is larger than 2°,and its working performance remains constant within(20±0.5)℃.What′s more,according to the tolerance analysis,the design result meets the current glass processing technic.The design procedure and method introduced have guiding significance for the FWMI design and production.