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Proceedings Paper

Two-photon absorption inside beta-BBO crystal during UV nonlinear optical conversion
Author(s): Sheng Wu; Geoffrey A. Blake; Sunny Sun; Henry Yu
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Paper Abstract

We measured the two-photon absorption (TPA) cross sections inside (beta) -BBO crystal during UV harmonic generation. We found that the 2-photon absorption is dominating the absorption effect inside the BBO crystal during UV harmonic generation. Both 2 UV photons and 1 UV photon + 1 fundamental photon absorption cross sections are significant. Possible explanations are presented, and compared with other nonlinear otpical crystals. Thermal profiles inside the crystal as a result of the strong absorption processes are discussed through a computer program that simulates the heat dissipation process. We conclude that TPA is the significant factor in high power scaling of UV harmonic generation inside nonlinear optical crystals.

Paper Details

Date Published: 23 March 2000
PDF: 7 pages
Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); doi: 10.1117/12.379921
Show Author Affiliations
Sheng Wu, California Institute of Technology (United States)
Geoffrey A. Blake, California Institute of Technology (United States)
Sunny Sun, CASIX, Inc. (United States)
Henry Yu, CASIX, Inc. (China)

Published in SPIE Proceedings Vol. 3928:
Nonlinear Materials, Devices, and Applications
Jeffrey W. Pierce, Editor(s)

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