Abstract
We generated of average output power at (bandwidth of ) in a diffraction-limited beam by placing a -long quasi-phase-matched GaAs crystal inside the cavity of a synchronously pumped optical parametric oscillator (OPO). The OPO used type-II-phase-matched periodically poled lithium niobate as a gain medium and was pumped by a mode-locked laser at , with a pulse duration, repetition rate, and average output power. The terahertz radiation was generated by difference frequency mixing between the signal and idler waves of the near-degenerate doubly resonant OPO.
© 2007 Optical Society of America
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