16 January 2018 Advanced rutile-made acousto-optical cell designed for precise parallel optical spectrum analysis in ultrahigh-frequency regime of the noncollinear two-phonon light scattering
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Abstract
We present an original approach to precise optical spectrum analysis based on combining the nonlinear acousto-optical processing with the cross-disperser technique. This novelty gives us a possibility to overlap all the visible range by the parallel analysis with a gained spectral resolution. For this goal, an advanced rutile-made acousto-optical cell has been designed and tested as dynamic acoustic grating at ultrahigh-frequency to provide the needed slit density to increase the resolving power and the nonlinear apodization to improve the profile of a resolvable spot. Theoretical estimations were developed for low-loss 6-cm rutile-crystal at λ = 440    nm , and they show that one can expect the spectral resolution 0.0609 Å, resolving power 72,250, and the number of resolvable spots 39,200 . The illustrative proof-of-principle experiments with that rutile-crystal-made acousto-optical cell have been carried out. Experimentally we have obtained the spectral resolution 0.0815    and resolving power 54,000 .
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Alexandre S. Shcherbakov, Alexandre S. Shcherbakov, Adan Omar Arellanes, Adan Omar Arellanes, } "Advanced rutile-made acousto-optical cell designed for precise parallel optical spectrum analysis in ultrahigh-frequency regime of the noncollinear two-phonon light scattering," Journal of Astronomical Telescopes, Instruments, and Systems 4(1), 015001 (16 January 2018). https://doi.org/10.1117/1.JATIS.4.1.015001 . Submission: Received: 23 February 2017; Accepted: 21 December 2017
Received: 23 February 2017; Accepted: 21 December 2017; Published: 16 January 2018
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