Abstract

We demonstrate a PPLN based pump-enhanced, singly-resonant optical parametric oscillator configured in a traveling wave geometry and pumped by a Ti:sapphire laser. The inclusion of a low finesse etalon within the OPO cavity stabilizes the signal frequency, and rotation of the etalon allows this frequency to be systematically hopped from axial mode to nearest neighbor axial mode over the entire free spectral range of the etalon (83GHz). Tuning of the pump frequency allows the signal frequency to be smoothly tuned over a cavity free spectral range. More than 35mW of single frequency idler power was generated in the spectral range 2800–3000nm for 600mW pump power. The superiority of traveling wave over standing wave geometries in these regards is discussed.

©2004 Optical Society of America

Hyperspectral imaging of gases with a continuous-wave pump-enhanced optical parametric oscillator

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