Pb{sub 1–x}Eu{sub x}Te alloys (0 ⩽ x ⩽ 1) as materials for vertical-cavity surface-emitting lasers in the mid-infrared spectral range of 4–5 μm

The optical properties of epitaxial layers and heterostructures based on Pb{sub 1–x}Eu{sub x}Te alloys (0 ⩽ x ⩽ 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...

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Bibliographic Details
Published in:Semiconductors (Woodbury, N.Y.) N.Y.), 2016-02, Vol.50 (2)
Main Authors: Pashkeev, D. A., Selivanov, Yu. G., Chizhevskii, E. G., Zasavitskiy, I. I.
Format: Article
Language:English
Subjects:
BARIUM FLUORIDES
BRAGG REFLECTION
CONCENTRATION RATIO
EUROPIUM TELLURIDES
HETEROJUNCTIONS
LAYERS
LEAD COMPOUNDS
MATERIALS SCIENCE
MOLECULAR BEAM EPITAXY
OPTICAL PUMPING
SPECTRAL REFLECTANCE
SUBSTRATES
SURFACES
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Summary:The optical properties of epitaxial layers and heterostructures based on Pb{sub 1–x}Eu{sub x}Te alloys (0 ⩽ x ⩽ 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{sub 1–x}Eu{sub x}Te(x ≈ 0.06)/EuTe. On the basis of this heteropair, highly reflective Bragg mirrors consisting of just three periods and featuring a reflectance of R ⩾ 99.8% at the center of the stop band are grown by molecular-beam epitaxy on BaF{sub 2} (111) substrates. Single-mode optically pumped vertical-cavity surface-emitting lasers for the 4–5 μm spectral range operating at liquid-nitrogen temperatures are demonstrated.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782616020172