Title :
Reduction of thermal dephasing by tight elliptical focusing perpendicular to walk-off plane leading to improved fourth harmonic generation in β-BaB2O4
Author :
Takahashi, Masakuni ; Osada, Akira ; Dergachev, Alex ; Moulton, Peter F. ; Cadatal-Raduban, Marilou ; Shimizu, Toshihiko ; Sarukura, Nobuhiko
Author_Institution :
Central Res. Inst., Mitsubishi Mater. Corp., Naka, Japan
Abstract :
Thermal dephasing due to two-photon absorption-induced linear absorption is reduced by minimizing second- and fourth-harmonic beam overlap through tight elliptical focusing perpendicular to the walk-off plane, leading to multi-watt, high-repetition rate ultraviolet generation in BBO.
Keywords :
barium compounds; light absorption; optical focusing; optical harmonic generation; thermo-optical effects; two-photon processes; ultraviolet spectra; BaB2O4; fourth harmonic generation; thermal dephasing; tight elliptical focusing; two-photon absorption-induced linear absorption; walk-off plane; Collimators; Electromagnetic wave absorption; Frequency conversion; Laser excitation; Lenses; Optical harmonic generation; Optical materials; Power generation; Solids; Thermal engineering;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
