Study of 2.9 THz quantum cascade laser based on bound-to-continuum transition | Zendy

Wan Wen-Jian | Zendy; Rong Yin | Zendy; ZhiYong Tan | Zendy; Wang Feng | Zendy; Yingjun Han | Zendy; Cao Jun-Cheng | Zendy

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Study of 2.9 THz quantum cascade laser based on bound-to-continuum transition

Author(s) -

Wan Wen-Jian,

Rong Yin,

ZhiYong Tan,

Wang Feng,

Yingjun Han,

Cao Jun-Cheng

Publication year - 2013

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.62.210701

Subject(s) - terahertz radiation , molecular beam epitaxy , materials science , cascade , laser , quantum cascade laser , optoelectronics , continuous wave , photomixing , optics , far infrared laser , physics , terahertz metamaterials , epitaxy , chemistry , chromatography , layer (electronics) , composite material

The material of GaAs/AlGaAs bound-to-continuum terahertz quantum-cascade laser (THz QCL) was grown by gas source molecular beam epitaxy. A THz QCL device was fabricated with semi-insulating surface-plasmon waveguide. Its spectrum and light intensity-current-voltage characteristics were studied. The device emits about 2.95 THz, and yields a maximum temperature of 67 K in pulse mode. In continuous-wave mode, it displays a threshold current density of 230 A/cm2 at 9 K with maximum emitted power of 1.2 mW and lases up to 30 K.

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