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

Fang-Liang Yan | Zendy; Jin-Chuan Zhang | Zendy; Zhiwei Jia | Zendy; Ning Zhuo | Zendy; Shenqiang Zhai | Zendy; Shuman Liu | Zendy; Fengqi Liu | Zendy; Zhanguo Wang | Zendy

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

Author(s) -

Fang-Liang Yan,

Jin-Chuan Zhang,

Zhiwei Jia,

Ning Zhuo,

Shenqiang Zhai,

Shuman Liu,

Fengqi Liu,

Zhanguo Wang

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4945383

Subject(s) - quantum cascade laser , cascade , optics , laser , beam divergence , phase (matter) , physics , laser power scaling , near and far field , quantum , diffraction , divergence (linguistics) , beam (structure) , optoelectronics , materials science , laser beams , laser beam quality , chemistry , linguistics , philosophy , chromatography , quantum mechanics

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

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