Bulletin of the American Physical Society
22nd Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter
Volume 67, Number 8
Monday–Friday, July 11–15, 2022; Anaheim, California
Session I03: Diagnostic Development I
9:15 AM–10:30 AM,
Tuesday, July 12, 2022
Anaheim Marriott
Room: Platinum 1
Chair: Tom Hartsfield, Los Alamos National Laboratory
Abstract: I03.00002 : Subsurface Spectroscopy of Heterogeneous Materials Using Optical Wavefront Shaping*
9:45 AM–10:00 AM
Presenter:
Benjamin R Anderson
(Washington State Univ)
Authors:
Hergen Eilers
(Washington State University)
Benjamin R Anderson
(Washington State Univ)
Natalie Gese
(Washington State University)
To address this challenge, we have developed a new optical technique that utilizes feedback assisted wavefront shaping (using spatial light modulators) to focus probe light inside a heterogeneous material, such that we can perform subsurface spectroscopy. Recently, we demonstrated this technique by monitoring subsurface photodegradation and thermal degradation of Eu-doped molecular crystals using both fluorescence and Raman spectroscopy. Based off these successes we are now looking into improvements to this technique to allow for greater time resolution including replacing our spatial light modulators with fast digital mirror devices, using ns optical phase conjugation, and self-healing optical beams.
*This work was supported by the Army Research Office, Award # W911NF-18-1-0094 to Washington State University.
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