The Copper Bromide (CuBr) laser, characterized by high repetition rate, high average power, and output in visible spectral regions, has potential for research and applications in many fields. So far, there have been few investigations on the pulse shortening of CuBr laser, and no reporting on the ps CuBr laser. This lack of research stems from the CuBr laser being the "self-terminated" laser with a pulse duration of approximately 10-50 ns. Traditional modelocking techniques have failed to produce 100 percent modulated pulse trains or subnanosecond pulses because the typical gain duration of the CuBr laser represents only a few cavity round-trip times. This short buildup time, combined with a moderate modulation index, results in incomplete mode-locking.

© 1991 Optical Society of America

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