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Free-space wavelength-multiplexed optical scanner

机译:自由空间波长复用光学扫描仪

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摘要

A wavelength-multiplexed optical scanning scheme is proposed for deflecting a free-space optical beam by selection of the wavelength of the light incident on a wavelength-dispersive optical element. With fast tunable lasers or optical filters, this scanner features microsecond domain scan setting speeds and large-diameter apertures of several centimeters or more for subdegree angular scans. Analysis performed indicates an optimum scan range for a given diffraction order and grating period. Limitations include beam-spreading effects based on the varying scanner aperture sizes and the instantaneous information bandwidth of the data-carrying laser beam.
机译:提出了一种波长多路复用光学扫描方案,用于通过选择入射在波长分散光学元件上的光的波长来偏转自由空间光束。借助快速可调激光器或滤光片,该扫描仪具有微秒级域扫描设置速度,并且具有亚厘米角度扫描的几厘米或更大的大直径孔径。进行的分析表明,对于给定的衍射级和光栅周期,最佳扫描范围。局限性包括基于变化的扫描器孔径大小和数据传输激光束的瞬时信息带宽的光束扩展效果。

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