Abstract

ZnSe and ZnSe-based materials are receiving a great deal of attention for their potential blue opto-electronic applications.¹,² We have previously reported observations of room temperature blue laser oscillations from ZnSe and ZnSSe single crystals employing the above-the-band-gap one-photon pumping method.³,⁴ Here we report our recent study of blue laser action in these crystals where optical pumping was achieved via two-photon transitions. In particular, we have used near-infrared (~850 nm) excitation with two photon energies in the vicinity of the fundamental energy gaps in these wide gap materials.

© 1993 Optical Society of America