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10 March 2020 Single axis multipass VIPA spectroscopy (Conference Presentation)
Antonio Fiore, Giuliano Scarcelli
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Proceedings Volume 11253, Biomedical Applications of Light Scattering X; 112530C (2020) https://doi.org/10.1117/12.2547540
Event: SPIE BiOS, 2020, San Francisco, California, United States
Abstract
Brillouin light scattering spectroscopy is an emerging technology providing label-free measurements of the viscoelastic properties of biological samples. Traditionally, Brillouin spectroscopy is performed using multipass Fabry Perot spectrometers, which allows high spectral extinction but low speed, or cross-axis Virtually Image Phased Array (VIPA) based spectrometers, with rapid single shot measurements but limited extinction. Here we present a multipass VIPA-based spectrometer, in which light is dispersed along the same axis at every stage and recirculated in the same etalon multiple times. This technical advancement allows single-shot high extinction Brillouin measurements as well as reduced spread of instrumental spectral linewidth.
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Antonio Fiore and Giuliano Scarcelli "Single axis multipass VIPA spectroscopy (Conference Presentation)", Proc. SPIE 11253, Biomedical Applications of Light Scattering X, 112530C (10 March 2020); https://doi.org/10.1117/12.2547540
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KEYWORDS
Spectroscopy
Fabry–Perot interferometers
Spectrometers
Light scattering
Point spread functions
Biological research
Clinical medicine
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