Miniaturization ofpthinsp;hyphen;Ge lasers: Progress toward continuous wave operation

摘要

We have observed intervalence band laser action in Alhyphen;doped germanium crystals with volumes as small as 0.03 cm3, one order of magnitude smaller than previously studiedphyphen;Ge laser crystals. A duty cycle of 1.5times;10minus;4was achieved. We show evidence that crystal heating plays a key role in the duration of the emission pulse and have measured a maximum pulse length of 11 mgr;s for a 0.43 cm3, Gahyphen;doped germanium crystal. Such progress in the understanding and performance ofphyphen;Ge hot hole lasers marks a significant step toward continuous wave operation.