R. Legras et al., STIMULATED-EMISSION AND OPTICAL GAIN IN CDTE CDMNTE GRADED-INDEX SEPARATE-CONFINEMENT HETEROSTRUCTURES/, Journal of electronic materials, 23(3), 1994, pp. 313-317
Stimulated emission and optical gain in CdTe/CdMnTe graded index separ
ate confinement quantum wells have been investigated as a function of
optical excitation powers and temperatures. Maximum gain of about 100
cm-1 is obtained at 95K for a single quantum well under 2-3 kW/cm2 exc
itation. This value allows to design laser cavities compatible with th
e microgun pumped laser device concept. The temperature dependence of
the gain still remains a problem (T0 = 110K).