High-resolution spectrometry for diffuse light by use of anamorphic concentration

A new scheme to improve the spectral resolution of grating-based spectrometers for diffuse light is proposed and demonstrated. It exploits an anamorphic transformation that reduces the beam divergence in the direction of the grating grooves while increasing the divergence in the orthogonal direction...

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Veröffentlicht in:Optics letters 1999-12, Vol.24 (24), p.1835-1837
Hauptverfasser: Davidson, N, Khaykovich, L, Hasman, E
Format: Artikel
Sprache:eng
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Zusammenfassung:A new scheme to improve the spectral resolution of grating-based spectrometers for diffuse light is proposed and demonstrated. It exploits an anamorphic transformation that reduces the beam divergence in the direction of the grating grooves while increasing the divergence in the orthogonal direction to improve the spectral resolution without any loss of light. Up to 12-fold improvement in the spectral resolution was obtained.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.24.001835