Temperature Degradation of 2.3, 3.2 and 4.1 THz Quantum Cascade Lasers

被引：0
|
作者：
Belov, D. A. [1 ]
Ikonnikov, A. V. [1 ]
Pushkarev, S. S. [2 ]
Galiev, R. R. [2 ]
Ponomarev, D. S. [2 ]
Khokhlov, D. R. [1 ]
Ushakov, D. V. [3 ]
Afonenko, A. A. [3 ]
Morozov, S. V. [4 ]
Gavrilenko, V. I. [4 ]
Khabibullin, R. A. [2 ,5 ]
机构：
[1] Lomonosov Moscow State Univ, Dept Phys, Moscow 119991, Russia
[2] Russian Acad Sci, Mokerov Inst Ultra High Frequency Semicond Elect, Moscow 117105, Russia
[3] Belarusian State Univ, Minsk 220030, BELARUS
[4] Russian Acad Sci, Inst Phys Microstruct, Nizhnii Novgorod 603950, Russia
[5] Ioffe Inst, St Petersburg 194021, Russia
来源：
SEMICONDUCTORS | 2023年 / 57卷 / 09期
关键词：
quantum cascade laser; terahertz range; quantum well; molecular beam epitaxy; activation energy; temperature degradation;
D O I：
10.1134/S1063782623070059
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this work, we conduct research of spectral and power characteristics of quantum cascade lasers (QCLs) based on a GaAs/Al0.15Ga0.85As active region emitting at 2.3 (A), 3.2 (B) and 4.1 (C) THz. The QCL devices had a double-metal Au waveguide and operated in pulsed mode with 1.5-9 mu s pulses at 20 Hz repetition rate. Using the integral output power curves measured with different pulse durations, we consider the potential mechanisms of QCL temperature degradation using Arrhenius plots. Moreover, we present the spectra of the lasers measured at fixed operating points for devices A, C and with current scanning for device B in a wide temperature range from 5 to 120 K. We hope that our results will prove useful for research concerning QCL maximum operating temperatures.
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页码：383 / 388
页数：6
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