23 March 2000 Two-photon absorption inside β-BBO crystal during UV nonlinear optical conversion
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Proceedings Volume 3928, Nonlinear Materials, Devices, and Applications; (2000) https://doi.org/10.1117/12.379921
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States
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.
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Sheng Wu, Sheng Wu, Geoffrey A. Blake, Geoffrey A. Blake, Sunny Sun, Sunny Sun, Henry Yu, Henry Yu, } "Two-photon absorption inside β-BBO crystal during UV nonlinear optical conversion", Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); doi: 10.1117/12.379921; https://doi.org/10.1117/12.379921
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