Spectral resolution measurement technique for Czerny-Turner spectrometers based on spectral interferometry

Ramiro Contreras Martínez; Jesús Garduño Mejía; Martha Rosete Aguilar; Carlos J. Román Moreno

doi:10.1117/12.2236502

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28 August 2016 Spectral resolution measurement technique for Czerny-Turner spectrometers based on spectral interferometry

Ramiro Contreras Martínez, Jesús Garduño Mejía, Martha Rosete Aguilar, Carlos J. Román Moreno

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Proceedings Volume 9960, Interferometry XVIII; 996012 (2016) https://doi.org/10.1117/12.2236502
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

We propose the design of a new technique for measuring the spectral resolution of a Czerny-Turner Spectrometer based on spectral interferometry of ultrashort laser pulses. It is well known that ultrashort pulse measurement like SPIDER and TADPOLE techniques requires a precise and well characterized spectrum, especially in fringe resolution. We developed a new technique, to our knowledge, in which by measuring the nominal fringe spacing of a spectral interferogram one can characterize the spectral resolution in a Czerny-Turner spectrometer using Ryleigh’s criteria. This technique was tested in a commercial Czerny-Turner spectrometer. The results demonstrate a consistent spectral resolution between what was reported by the manufacturer. The actual calibration technique was applied in a homemade broadband astigmatism-free Czerny-Turner spectrometer. Theory and experimental results are presented.

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Ramiro Contreras Martínez, Jesús Garduño Mejía, Martha Rosete Aguilar, and Carlos J. Román Moreno "Spectral resolution measurement technique for Czerny-Turner spectrometers based on spectral interferometry", Proc. SPIE 9960, Interferometry XVIII, 996012 (28 August 2016); https://doi.org/10.1117/12.2236502

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