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High-Duty-Cycle Operation of GaAs/AlGaAs Quantum Cascade Laser above Liquid Nitrogen Temperature |
| LIU Jun-Qi1;LIU Feng-Qi1;SHAO Ye1;LI Lu1;GUO Yu1;WANG Zhan-Guo1;WANG Liang-Chen2 |
| 1Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083
2Engineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083 |
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| Cite this article: |
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LIU Jun-Qi, LIU Feng-Qi, SHAO Ye et al 2006 Chin. Phys. Lett. 23 2968-2971 |
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Abstract We present a detailed study of λ ～ 9.75μm GaAs/AlGaAs quantum cascade lasers. For a coated 2-mm-long and 40-μm-wide laser, an optical power of 85μW is observed at 95% duty cycle at 80K. At a moderate driving pulse (1kHz and 1% duty cycle), the device presents a peak power more than 20mW even at 120K. At 80K, the fitted result of threshold current densities shows evidence of potential cw operation.
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| Keywords:
42.55.Px
85.60.Bt
71.55.Eq
81.15.H
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Published: 01 November 2006
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| PACS: |
42.55.Px
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(Semiconductor lasers; laser diodes)
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85.60.Bt
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(Optoelectronic device characterization, design, and modeling)
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71.55.Eq
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(III-V semiconductors)
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81.15.H
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