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Rev Sci Instrum. 2008 Dec;79(12):123114. doi: 10.1063/1.3058603.

Simple two-dimensional-imaging spectrograph with wedged narrow band filters.

Author information

  • 1Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Brehova 7, 115 19 Prague 1, Czech Republic. divoky@fzu.cz

Abstract

A minute, yet practical, modification of a well-known spectrograph based on a set of wedged narrow band filters is presented. It makes possible two-dimensional-imaging spectral measurements with a potential subpixel precision of a few micrometers. The simple spectroscopic device can evaluate dispersion of quantities which can be transformed into an image, e.g., into a spatial beam distribution. The spectrograph was used to measure angular dispersion of both a laser oscillator producing femtosecond pulses and a simple dispersive optical system, an optical wedge.

PMID:
19123552
[PubMed - indexed for MEDLINE]
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