Photoconductive switching using polycrystalline ZnSe

Abstract

Photoconductive switching was investigated using polycrystalline ZnSe illuminated by a Coumarine 480 dye laser pumped by an excimer laser. An intracavity grating was used to tune the dye laser wavelength to maximize the output voltage. High mobility (>900 cm/sup 2//V-s), a carrier lifetime under 1 ns, and operation at DC bias fields of 45 kV/cm were observed.< >