Construction method through multiple off-axis parabolic surfaces expansion and mixing to design an easy-aligned freeform spectrometer

The classic Czerny-Turner spectrometer consists of a plane grating and two spherical mirrors. The optical path geometry adopted for incident and grating dispersed light is off-axis reflection, so the spherical collimating and focusing mirrors introduce coma and astigmatism. The conventional configur...

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Veröffentlicht in:	Optics express 2019-09, Vol.27 (18), p.25994-26013
Hauptverfasser:	Chen, Lu, Gao, Zhishan, Ye, Jingfei, Cao, Xin, Xu, Ningyan, Yuan, Qun
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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