  We perform a numerical analysis of mid-infrared photoluminescence emitted by
praseodymium (III) doped chalcogenide selenide glass pumped at near-infrared
wavelengths. The results obtained show that an effective inversion of level
populations can be achieved using both 1480 nm and 1595 nm laser diodes. The
rate of the spontaneous emission achieved when pumping at 1480 nm and 1595 nm
is comparable to this achieved using the standard pumping wavelength of 2040
nm.
