Stimulated and Laser Emission in CdZnTe/CdMnTe Double Quantum Well Heterostructures |
| L. Kowalczyk, G. Karczewski, T. Wojtowicz and J. Kossut Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland |
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| Stimulated emission by optical excitation has been investigated in CdZnTe/CdMnTe quantum well heterostructures. Laser action has been achieved at 4.2 K and at 77 K with relatively low threshold values of the excitation intensity. Photοluminescence excitation spectra of the stimulated emission were obtained indicating that the optical gain involves exciton-exciton inelastic scattering. |
| DOI: 10.12693/APhysPolA.88.787 PACS numbers: 78.45.+h, 71.55.Gs |