| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Continuous-Wave Operation of Terahertz Quantum Cascade Lasers at 3.2 THz |
| WANG Tao, LIU Jun-Qi**, CHEN Jian-Yan, LIU Ying-Hui, LIU Feng-Qi**, WANG Li-Jun, 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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WANG Tao, LIU Jun-Qi, CHEN Jian-Yan et al 2013 Chin. Phys. Lett. 30 064201 |
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Abstract We demonstrate continuous-wave (cw) operation of terahertz (THz) quantum cascade lasers emitting at 3.2 THz based on bound-to-continuum active region and semi-insulating surface-plasmon waveguide design. Optical power of 62 mW with a threshold current density of 285 A/cm2 is obtained at 10 K from a 130-μm-wide and 1.5-mm-long laser in cw operation. Maximum cw operation temperature is up to 60 K. In pulsed mode, peak optical power more than 100 mW at 10 K and 2.1 mW at 85 K are observed from a 230-μm-wide and 2-mm-long device.
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Received: 05 January 2013
Published: 31 May 2013
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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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