The cubic nonlinear susceptibility of barium metaborate was employed for the generation of phase-matched third-harmonic generation (THG) of 1.053-μm pump radiation. The various processes that are responsible for THG in this crystal are discussed and experimental results for types I and II phase matching are presented. THG power of 50 μW is recorded with an average pump power of 800 mW of 1-kHz repetition rate picosecond pulses.
© 1992 Optical Society of America
Original Manuscript: September 13, 1990
Published: July 20, 1992
I. V. Tomov, B. Van Wonterghem, and P. M. Rentzepis, "Third-harmonic generation in barium borate," Appl. Opt. 31, 4172-4174 (1992)