InGaAs/AlInAs/InP Quantum-Cascade Lasers with Reflective and Antireflective Optical Coatings

Quantum-cascade lasers (QCLs) based on InGaAs/AlInAs/InP with reflective and antireflective coatings are fabricated and studied. The manufactured lasers emit in the spectral range from 4 to 5 μm. The effect of variation in the front mirror reflectance on the output power of a QCL with a highly refle...

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Bibliographic Details
Published in:Bulletin of the Lebedev Physics Institute Vol. 51; no. Suppl 7; pp. S507 - S511
Main Authors: Podgaetskii, K. A., Lobintsov, A. V., Danilov, A. I., Ivanov, A. V., Ladugin, M. A., Marmalyuk, A. A., Kuznetsov, E. V., Dyudelev, V. V., Mikhailov, D. A., Chistyakov, D. V., Kognovitskaya, E. A., Losev, S. N., Abdulrazak, S. Kh, Babichev, A. V., Savchenko, G. M., Lyutetskii, A. V., Slipchenko, S. O., Pikhtin, N. A., Gladyshev, A. G., Novikov, I. I., Karachinsky, L. Ya, Egorov, A. Yu, Sokolovskii, G. S.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01.11.2024
Springer Nature B.V
Subjects:
Antireflection coatings
Efficiency
Emitters
Energy consumption
Indium aluminum arsenides
Indium gallium arsenides
Indium phosphides
Lasers
Molecular beam epitaxy
Optical coatings
Physics
Physics and Astronomy
Protective coatings
Quantum cascade lasers
Radiation
Spectral emittance
Threshold currents
partially reflective optical coatings
infrared range
quantum cascade laser
antireflective optical coatings
output power
highly reflective mirrors
ISSN:1068-3356, 1934-838X
Online Access:Get full text
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Summary:Quantum-cascade lasers (QCLs) based on InGaAs/AlInAs/InP with reflective and antireflective coatings are fabricated and studied. The manufactured lasers emit in the spectral range from 4 to 5 μm. The effect of variation in the front mirror reflectance on the output power of a QCL with a highly reflective rear mirror is investigated. It is shown that the use of an antireflective coating on the front face leads to a simultaneous increase in both the threshold current of the QCL and the slope of the light–current characteristic. This allows a higher output power to be achieved at high pump currents. In contrast, the use of a partially reflective coating on the front face not only reduces the threshold current of the QCL, but also decreases the slope of the light–current characteristic. Such QCLs may have an advantage over other emitters at low pump currents.
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ISSN:1068-3356
1934-838X
DOI:10.3103/S1068335624601742