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OSA Student Chapter Meeting

SPEAKER: Zachary Coker
TITLE: Advances in Brillouin spectroscopy and applications in biomedical imaging
Brillouin spectroscopy and imaging has experienced a renaissance in recent years seeing vast improvements in methodology and increasing number of applications. With this resurgence has come the development of new spontaneous Brillouin instruments that often tout superior performance compared to established conventional systems such as tandem Fabry-Perot interferometers (TFPI). In this talk, we take a look at the performance of two modern Brillouin spectroscopy systems, and discuss recent applications and future potential for biomedical imaging.

TITLE: Single-shot measurement of the orbital-angular-momentum spectrum of light
The existing methods for measuring the orbital-angular-momentum (OAM) spectrum suffer from issues such as poor efficiency, strict interferometric stability requirements, and too much loss. Furthermore, most techniques inevitably discard part of the field and measure only a post-selected portion of the true spectrum. Here, they propose and demonstrate an interferometric technique for measuring the true OAM spectrum of optical fields in a single- shot manner. This technique directly encodes the OAM-spectrum information in the azimuthal intensity profile of the output interferogram. In the absence of noise, the spectrum can be fully decoded using a single acquisition of the output interferogram, and, in the presence of noise, acquisition of two suitable interferograms is sufficient for the purpose.

Wednesday, November 15, 2017
IQSE 578, 11:30
Mitchell Physics Building

Department of Physics and Astronomy
Institute for Quantum Science and Engineering
Texas A&M University

(Pizza lunch as usual. Newcomers welcome!)

Host: Sasha Zhdanova