Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
62 (1993), S. 1071-1073
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have studied laser action of ZnSe and ZnS0.05Se0.95 samples grown by seeded physical vapor phase transport (SPVT) technique in the near resonant two-photon absorption regime. The two-photon pumped lasing was observed using a tunable near-infrared nanosecond laser (830–890 nm). Blue lasing could be observed up to 200 K and the two-photon pumped lasing threshold was measured to be ∼7 MW/cm2 at 10 K. This work demonstrates the applicability of using near-infrared diode lasers as pumping sources to excite the ZnSe-based materials. By comparing the energy position of two-photon pumped lasing with that of the one-photon pumped lasing and examining the red shift of the energy position, we suggest that the free-exciton free-exciton scattering and resultant band filling are the dominant processes involved in the lasing action of ZnSe and ZnSSe alloy crystals at low temperature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.108798
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