Abstract
We report kilohertz repetition-rate pulse-to-pulse wavelength tuning from 3.22 to in a periodically poled lithium niobate (PPLN) optical parametric oscillator (OPO). Rapid tuning over with random wavelength accessibility is achieved by rotation of the pump beam angle by no more than 24 mrad in the PPLN crystal by use of an acousto-optic beam deflector. Over the entire tuning range, a near-transform-limited OPO bandwidth can be obtained by means of injection seeding with a single-frequency laser diode. The frequency agility, high repetition rate, and narrow bandwidth of this mid-IR PPLN OPO make it well suited as a lidar transmitter source.
© 1999 Optical Society of America
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