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We present the spectral gain and cavity loss characterisation of an optically-pumped external-cavity 1-μm surface-emitting InGaAs quantum well laser by observing the evolution of intracavity power and spontaneous emission following the uncovering of the cavity mode by an intra-cavity chopper. The smooth monotonic rise (fall) is characteristic of an external-cavity quantum well laser where the photon...
Photoluminescence spectra on Hg1‐xCdxTe (x∼0.3) layers grown by molecular beam epitaxy on CdZnTe substrates were studied. The investigations were carried out on non intentionally doped, In doped and As doped samples and the effect of different annealing procedures were investigated. Excitation‐power dependent and temperature dependent comparative studies were performed. The transition mechanisms are...
We studied the photoluminescence of Hg1−xCdxTe (x ≈ 0.3) layers grown by molecular-beam epitaxy on CdZnTe. The investigations were carried out on unintentionally doped, In-doped, and As-doped samples, and the effect of different annealing procedures was examined. Excitation-power-dependent and temperature-dependent comparative studies were performed. The transition mechanisms are discussed, and...
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