Abstract
A optical parametric oscillator (OPO) based on a noncritically phase-matched crystal is demonstrated. OPO and stimulated Raman scattering techniques are successfully combined in an acousto-optically Q-switched Raman laser. The device efficiently realizes three steps of conversion: from a laser diode wavelength of to the fundamental wavelength of ; next, to the Stokes wavelength of ; and finally to the OPO signal wavelength of . With an incident diode power of and a pulse repetition rate of , an average signal power of is obtained with a diode-to-signal conversion efficiency of 6.75%. The beam quality factors () of the signal wave in both horizontal and vertical directions are measured to be . The numerical output power results of the system, the thermal lensing, and the stability parameter of the cavity are also discussed.
© 2011 Optical Society of America
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