Theoretical analysis of spectral gain in a terahertz quantum-cascade laser: Prospects for gain at 1 THz

被引：22
|
作者：
Lee, SC [1 ]
Wacker, A [1 ]
机构：
[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany
来源：
APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 13期
关键词：
D O I：
10.1063/1.1614440
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In a recent letter [B. S. Williams Appl. Phys. Lett. 82, 1015 (2003)], Williams reported the development of a terahertz quantum-cascade laser operating at 3.4 THz or 14.2 meV. We have calculated and analyzed the gain spectra of the quantum-cascade structure described in their work, and in addition to gain at the reported lasing energy of similar or equal to14 meV, we have discovered substantial gain at a much lower energy of around 5 meV or just over 1 THz. This suggests an avenue for the development of a terahertz laser at this lower energy, or of a two-color terahertz laser. (C) 2003 American Institute of Physics.
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页码：2506 / 2508
页数：3
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