Abstract
Rovibration absorption lines both of and are observed simultaneously with the output of a broadband difference frequency generated in a direct-bonded quasi-phase-matched waveguide, which is a 50 mm device with a single quasi-phase-matching period that is operated at a constant temperature. The wavelength conversion efficiency and the difference-frequency generation bandwidth reach and 100 nm, respectively. The idler output bandwidth in the region is obtained by group-velocity matching or phase-mismatch minimization when a pump laser diode and a tunable signal source are used.
© 2006 Optical Society of America
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