Abstract

By using an open-resonator configuration, cw laser oscillation at 4.9 μm has been obtained on the 2 → 1 vibrational transition of CN impurities embedded in KI. Population inversion in this device is produced by direct optical pumping of the first-overtone transition of CN at 2.42 μm with a tunable (F2+)A color-center laser. By using a closed resonator, simultaneous pulsed laser output has been observed from the 3 → 2 and 2 → 1 transitions of CN following long-pulse pumping of the second-overtone transition with the recently developed high-power NaCl:F2+:O2− color-center laser.

© 1988 Optical Society of America

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