Brunner Robert, Burkhardt Matthias, Rudolf Klaus, Correns Nico
Carl Zeiss AG, BS Jena, Germany.
Opt Express. 2008 Aug 4;16(16):12239-50. doi: 10.1364/oe.16.012239.
The conception and realization of an imaging microspectrometer, limited to an optical volume of 11 x 6 x 5 mm(3), is presented. The spectrometer is based on a multi-order concept and offers an overall spectral bandwidth of 400-1030 nm with better than 2.5 nm resolution in the visible range. The numerical aperture of NA = 0.2 allows an appropriate energy efficiency. As the most essential element of the microspectrometer, a concave diffraction grating with a diameter of 5 mm and an image distance of f = 8.6 mm was manufactured in a holographic recording process. For the recording process the specifications of the concave grating require two diffraction limited point sources in very close proximity. To provide a point source distance below 1 mm a recording concept based on the introduction of a supplementary hologram was employed.
本文介绍了一种成像微型光谱仪的概念与实现，其光学体积限制为11×6×5立方毫米。该光谱仪基于多阶概念，在可见范围内提供400 - 1030纳米的总光谱带宽，分辨率优于2.5纳米。数值孔径NA = 0.2可实现适当的能量效率。作为微型光谱仪的最关键元件，在全息记录过程中制造了直径为5毫米、像距f = 8.6毫米的凹面衍射光栅。对于记录过程，凹面光栅的规格要求两个非常靠近的衍射极限点光源。为了提供低于1毫米的点源距离，采用了基于引入辅助全息图的记录概念。
