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单词 Quantum cascade laser
释义

Quantum cascade laser

中文百科

量子级联激光器

量子级联激光器(Quantum Cascade Laser)是一种能够发射光谱在中红外和远红外频段激光的半导体激光器。它是由贝尔实验室哲罗姆·菲斯特、费德里科·卡帕索等人于1994年率先实现。

英语百科

Quantum cascade laser 量子级联激光器

Interband transitions in conventional semiconductor lasers emit a single photon.
In quantum cascade structures, electrons undergo intersubband transitions and photons are emitted. The electrons tunnel to the next period of the structure and the process repeats.
Subband populations are determined by the intersubband scattering rates and the injection/extraction current.
Electron wave functions are repeated in each period of a three quantum well QCL active region. The upper laser level is shown in bold.

Quantum cascade lasers (QCLs) are semiconductor lasers that emit in the mid- to far-infrared portion of the electromagnetic spectrum and were first demonstrated by Jerome Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson, and Alfred Cho at Bell Laboratories in 1994.

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更新时间:2025/6/24 0:18:16