Abstract

Second harmonic generation(SHG) in semiconductors such as GaAs and AlGaAs has been demonstrated to realize compact short wavelength light sources.¹·²·³·⁴·⁵·⁶·⁷ Most of the devices are surface emitters, which radiate SH wave normal to the surface with horizontally propagating fundamental waves.²·³’⁴·⁶·⁷ A stack of GaAs and AlGaAs with a period of half a wavelength of the second harmonic has been incorporated to give quasi phase matched(QPM) SHG.⁵·⁶·⁷

© 1994 Optical Society of America