28 August 2016 Spectral resolution measurement technique for Czerny-Turner spectrometers based on spectral interferometry
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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, 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); doi: 10.1117/12.2236502; https://doi.org/10.1117/12.2236502
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