A singly-resonant continuous-wave optical parametric oscillator (cw-OPO) pumped by a fiber-amplified diode laser is described. Tuning of the pump source allowed the OPO output to be tuned continuously, without mode-hops, over 110 GHz in 29 ms. Discontinuous pump tuning over 20 nm in the region of 3.4 μm was also obtained. The rapid and continuous idler tuning was demonstrated by the measurement of a methane absorption spectrum.

© 2005 Optical Society of America

PDF Article