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Quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO_3

L.E. MyersE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USAR. C. EckardtE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USAM. M. FejerE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USARobert L. ByerE. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USAW. R. BosenbergLightwave Electronics Corporation, Mountain View, California 94043 USAJ.W. PierceCygnus Laser Corporation, Duvall, Washington 98019 USA

1995en

ABI

Annotatsiya

We review progress in quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO3. Using the electric-field poling process, we can reliably fabricate 0.5-mm-thick crystals with uniform domain structures over a 15-mm length. Periodically poled material retains the low-loss and bulk power handling properties of single-domain LiNbO3, and quasi phase matching permits noncritical phase matching with d33, the highest-valued nonlinear coefficient. Optical parametric oscillators pumped by 1.064-μm pulsed Nd:YAG lasers have been operated over the wavelength range 1.4–4 μm with tuning by temperature or by quasi-phase-matched period. We have shown an oscillation threshold as low as 0.012 mJ with a Q-switched pump laser and pumping at greater than ten times threshold without damage. We have also demonstrated a cw doubly resonant oscillator near 1.96 μm pumped directly with a commercial cw diode laser at 978 nm.

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Identifikatorlar

DOI: 10.1364/josab.12.002102

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