High-resolution emission spectra of pulsed terahertz quantum-cascade lasers

被引：3
|
作者：
Ikonnikov, A. V. [1 ]
Antonov, A. V. [1 ]
Lastovkin, A. A. [1 ]
Gavrilenko, V. I. [1 ]
Sadof'ev, Yu. G. [2 ]
Samal, N. [2 ]
机构：
[1] Russian Acad Sci, Inst Phys Microstruct, Nizhnii Novgorod 603950, Russia
[2] Trion Technol, Tempe, AZ 85281 USA
来源：
SEMICONDUCTORS | 2010年 / 44卷 / 11期
关键词：
Effective Refractive Index; Lasing Level; Duty Ratio; Duty Factor; Emission Frequency;
D O I：
10.1134/S1063782610110175
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The spectra of pulsed terahertz quantum-cascade lasers were measured with high spectral resolution. The characteristic line width at half maximum was 0.01 cm(-1); it is controlled by laser temperature variations during the supply voltage pulse. It was shown that an increase in the laser temperature leads to a decrease in the emission frequency, which is caused by an increase in the effective refractive index of the active region. It was also found that a decrease in the supply voltage results in a decrease in the emission frequency, which is caused by a change in the energy of diagonal transitions between lasing levels.
引用
收藏
页码：1467 / 1471
页数：5
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