Near-infrared noncritically phase-matched second-harmonic generation in KNbO3
- 15 May 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 34 (10) , 650-652
- https://doi.org/10.1063/1.90618
Abstract
Noncritical type‐I phase matching at room temperature has been observed in KNbO3 for λpm=860 nm using the nonlinear optical coefficient d32=−40‖d11 (SiO2) ‖. By increasing the crystal temperature up to 180 °C the phase‐matching wavelength is increased to λpm=950 nm. At room temperature the efficiency for second‐harmonic generation was 15% for a power density Iω =0.5 MW/cm2 of the fundamental and for a crystal length l=5.74 mm.Keywords
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