1979/06/01 by K. Kato, Kiyoshi Katō
Physics and Astronomy · Engineering · #Photorefractive and Nonlinear Optics #Solid State Laser Technologies #Advanced Fiber Laser Technologies
paper · doi:10.1109/jqe.1979.1070035
KNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> has been found to be noncritically phase matchable for frequency doubling of 8500-9360-Å radiation by temperature tuning. An energy conversion efficiency of 43 percent was obtained at a pump power of 0.9 MW at 8502 Å in a 5-mm-long crystal, thus demonstrating the attractiveness of KNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> as a second-harmonic generator of moderate to low power near-infrared lasers such as an Er: YLF laser.