D. A. Pashkeev, Yu. G. Selivanov, E. G. Chizhevskii, I. I. Zasavitskii, “Pb$_{1-x}$Eu$_{x}$Te (0 $\le x \le$ 1) as materials for vertical-cavity surface-emitting lasers in the mid-infrared spectral range of 4–5 $\mu$m”, Fizika i Tekhnika Poluprovodnikov, 2016, Volume 50, Issue 2,Pages 229

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Semiconductor physics

Pb$_{1-x}$Eu$_{x}$Te (0 $\le x \le$ 1) as materials for vertical-cavity surface-emitting lasers in the mid-infrared spectral range of 4–5 $\mu$m

D. A. Pashkeev, Yu. G. Selivanov, E. G. Chizhevskii, I. I. Zasavitskii

P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow

Abstract: The optical properties of epitaxial layers and heterostructures based on Pb$_{1-x}$Eu$_{x}$Te alloys (0 $\le x \le$ 1) are analyzed in the context of designing Bragg mirrors and vertical-cavity surface-emitting lasers for the midinfrared spectral range. It is shown that the optimal heteropair for laser microcavities is Pb$_{1-x}$Eu$_{x}$Te ($x\approx$ 0.06)/EuTe. On the basis of this heteropair, highly reflective Bragg mirrors consisting of just three periods and featuring a reflectance of $R\ge$ 99.8% at the center of the stop band are grown by molecular-beam epitaxy on BaF$_2$ (111) substrates. Single-mode optically pumped vertical-cavity surface-emitting lasers for the 4–5 $\mu$m spectral range operating at liquid-nitrogen temperatures are demonstrated.

Keywords: Transmission Spectrum, Epitaxial Layer, PbTe, Stop Band, Laser Structure.

Received: 28.05.2015
Accepted: 03.06.2015