Abstract

Frequency doubling of laser diodes has been demonstrated in bulk crystals, bulk crystals in a resonant cavities as well as in periodically poled waveguides. The output power available from the frequency doubling schemes however, has been limited by the relatively low output powers available from laser diodes. Frequency doubling of laser light requires a high brightness diffraction limited input beam with single spectral mode. Coherent output power from a semiconductor laser has been limited for many years to 100-200 mW, However, recently over 1 Watt cw diffraction limited output power has been obtained from a monolithically integrated flared master oscillator power amplifier (MOPA)¹.

© 1993 Optical Society of America