We present numerical modeling and laboratory studies of degenerate type I nanosecond optical parametric oscillators. Because the signal and idler waves are identical and parametric gain is phase sensitive, their round-trip phase is a critical parameter. We show that signal spectrum, transverse mode, and conversion efficiency are all strongly influenced by this phase. We also examine the influence of signal-wave injection seeding and phase-velocity mismatch.
© 2003 Optical Society of America
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
Arlee V. Smith, Darrell J. Armstrong, Mark C. Phillips, Russell J. Gehr, and Gunnar Arisholm, "Degenerate type I nanosecond optical parametric oscillators," J. Opt. Soc. Am. B 20, 2319-2328 (2003)