| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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High-Power High-Temperature Continuous-Wave Operation of Quantum Cascade Laser at λ∼4.6 µm without Lateral Regrowth |
| LIANG Ping, LIU Feng-Qi**, ZHANG Jin-Chuan, WANG Li-Jun, LIU Jun-Qi, WANG Zhan-Guo |
| Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 |
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| Cite this article: |
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LIANG Ping, LIU Feng-Qi**, ZHANG Jin-Chuan et al 2012 Chin. Phys. Lett. 29 074215 |
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Abstract High-power quantum cascade lasers (λ=4.6 µm ) working in continuous wave (cw) up to 90°C are presented. The material was grown by solid-source molecular beam epitaxy and processed into narrow conventional ridge geometry without lateral regrowth. High cw output power of 850 mW at 10°C and more than 200 mW at 90°C were obtained with threshold current densities of 1.34 and 2.47 kA/cm2, respectively, for a high-reflectivity-coated 12-µm -wide and 3-mm-long laser.
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Received: 04 May 2012
Published: 29 July 2012
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| PACS: |
42.55.Px
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(Semiconductor lasers; laser diodes)
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42.60.Pk
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(Continuous operation)
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