Polarization-dependent optical gain and absorption spectra of (Cd,Mn)Te and (Zn,Mn)Se multiple quantum well structures

Bonsett, T. C.; Yamanishi, M.; Gunshor, R. L.; Datta, S.; Kolodziejski, L. A.
August 1987
Applied Physics Letters;8/17/1987, Vol. 51 Issue 7, p499
Academic Journal
The absorption and gain spectra for TE and TM modes in (100) oriented (Cd,Mn)Te and (Zn,Mn)Se multiple quantum well (MQW) structures have been measured by observing the photoluminescence from a cleaved edge. In (Cd,Mn)Te MQW’s the TE mode absorption and gain are dominant, as observed earlier in (Ga,Al)As MQW’s; in (Zn,Mn)Se MQW’s, however, we observe a clear dominance of the TM mode near the band edge. Whereas the TE mode dominates the gain spectra of a (Cd,Mn)Te MQW, the TM mode dominates the gain spectra of a (Zn,Mn)Se MQW, providing the first report of TM-polarized stimulated emission from a MQW structure. The opposite behavior of (Cd,Mn)Te and (Zn,Mn)Se MQW’s is ascribed to the opposite sense of the uniaxial strain in these systems.


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