High-power phase-locked quantum cascade laser array emitting at λ ∼ 4.6 μm

Fang-Liang Yan; Jin-Chuan Zhang; Zhi-Wei Jia; Ning Zhuo; Shen-Qiang Zhai; Shu-Man Liu; Feng-Qi Liu; Zhan-Guo Wang

doi:10.1063/1.4945383

AIP Advances (Mar 2016)

High-power phase-locked quantum cascade laser array emitting at λ ∼ 4.6 μm

Fang-Liang Yan,
Jin-Chuan Zhang,
Zhi-Wei Jia,
Ning Zhuo,
Shen-Qiang Zhai,
Shu-Man Liu,
Feng-Qi Liu,
Zhan-Guo Wang

Affiliations

Fang-Liang Yan: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China
Jin-Chuan Zhang: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China
Zhi-Wei Jia: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China
Ning Zhuo: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China
Shen-Qiang Zhai: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China
Shu-Man Liu: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China
Feng-Qi Liu: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China
Zhan-Guo Wang: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences; Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, P.O. Box 912, Beijing 100083, People’s Republic of China

DOI: https://doi.org/10.1063/1.4945383
Journal volume & issue: Vol. 6, no. 3
pp. 035022 – 035022-6

Abstract

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A phase-locked quantum cascade laser (QCL) array consisting of one hundred elements that were integrated in parallel was achieved at λ ∼ 4.6 μm. The proposed Fraunhofer’s multiple slits diffraction model predicted and explained the far-field pattern of the phase-locked laser array. A single-lobed far-field pattern, attributed to the emission of an in-phase-like supermode, is obtained near the threshold (Ith). Even at 1.5 Ith, greater than 73.3% of the laser output power is concentrated in a low-divergence beam with an optical power of up to 40 W.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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