ZNSE-BASED BIREFRINGENT WAVE-GUIDE AS POCKELS RETARDER IN THE BLUE-GREEN SPECTRAL RANGE

Electro-refractive modulation in the blue-green spectral range is demo nstrated in strained, MBE-grown ZnSe waveguides with cladding layers o f ZnMnSe on n-GaAs substrates. Utilizing the Pockels effect in Schottk y-contacted structures with built-in birefringence, a contrast ratio b etter than 80:1 at 2.485 eV is achieved. The rise time of (4.7+/-0.5) ns is RC limited. (C) 1996 American Institute of Physics.