Abstract

The operation of a room-temperature, continuous-wave, intracavity frequency-doubled Cr⁴⁺:forsterite laser capable of producing broadly tunable output in the orange-red region of the electromagnetic spectrum is described. Intracavity doubling was achieved in a periodically poled lithium niobate crystal that had gratings with different periods. Tunable second-harmonic output could be obtained between 613 and 655 nm. At a wavelength of 630 nm, intracavity doubling yielded as much as 45 mW of continuous-wave output. To the author’s knowledge, this represents the highest second-harmonic-power generation obtained to date with a continuous-wave Cr⁴⁺:forsterite laser.

© 2002 Optical Society of America

Tunable visible solid-state lasers based on intracavity frequency doubling of Cr:forsterite in KTP

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