Abstract
Frequency doubling of near-infrared diode lasers (DLs) offers the potential of a robust and reliable blue laser source. Potassium niobate (KNbO3) crystals are very attractive for second-harmonic generation (SHG) in the blue-green spectral range due to their high nonlinear optical coefficients and the favorable noncritical phase-matching possibilities for wavelengths at 858 run and 982 run at room temperature.1,2 SHG by frequency doubling of DLs in KNbO3 has been demonstrated in single-pass,3−5 resonant,6,7 and waveguide8 configurations.
© 1996 Optical Society of America
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