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Flat-focal-field integrated spectrometer using a field-flattening lens

机译:使用场平透镜的平焦一体光谱仪

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摘要

Integrated spectrometers are usually of the Rowland mounting type [1]. For applications in which a continuous output spectrum needs to be imaged directly onto a linear detector array, the curved image plane of the Rowland mounting would result in additional losses and aberrations at the outer detector channels. Therefore, a flat-focal-field spectrometer would be highly desirable for such applications. Different methods have been proposed for the design of a flat-focal-field spectrometer [2,3], with limited success. In this work, an alternative way of designing a flat-focal-field arrayed-waveguide grating (AWG) [4] using an integrated field-flattening lens is presented.
机译:集成光谱仪通常为Rowland安装类型[1]。对于需要将连续输出光谱直接成像到线性检测器阵列上的应用,Rowland安装架的弯曲图像平面会在外部检测器通道上造成额外的损耗和像差。因此,对于这样的应用,非常需要平场光谱仪。已经提出了不同的方法来设计平焦点光谱仪[2,3],但效果有限。在这项工作中,提出了一种使用集成场平坦透镜设计平坦焦点场阵列波导光栅(AWG)[4]的替代方法。

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