Analysis of the slope efficiency for terahertz quantum-cascade lasers

被引：16
|
作者：
Schrottke, L. [1 ]
Wienold, M. [1 ]
Giehler, M. [1 ]
Hey, R. [1 ]
Grahn, H. T. [1 ]
机构：
[1] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany
来源：
JOURNAL OF APPLIED PHYSICS | 2010年 / 108卷 / 10期
关键词：
D O I：
10.1063/1.3511470
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The slope efficiency is, in addition to the threshold current density and operating voltage, a decisive target value for the operation of quantum-cascade lasers (QCLs) in order to achieve an optimal total efficiency for the conversion of electrical input power into optical output power. We analyze the light-current characteristics for a set of similar, high-power, bound-to-continuum terahertz QCLs. The calculated internal slope efficiency shows a clear dependence on the height and thickness of the barriers. In contrast to the simulations, we found experimentally a significant difference in the threshold current densities and slope efficiencies for QCLs with nominally identical layer structures, which we mainly attribute to different line broadening. (C) 2010 American Institute of Physics. [doi:10.1063/1.3511470]
引用
收藏
页数：6
相关论文
共 50 条
  • [31] Recent Advances of Efficient Design of Terahertz Quantum-Cascade Lasers
    Sharma, Rajesh
    Kaur, Harpreet
    Singh, Manjot
    PLASMONICS, 2021, 16 (02) : 449 - 461
  • [32] Quantum-cascade lasers for terahertz high-resolution spectroscopy
    Lue, X.
    Roeben, B.
    Biermann, K.
    Schrottke, L.
    Wubs, J. R.
    Macherius, U.
    Weltmann, K. -D.
    van Helden, J. H.
    Grahn, H. T.
    2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ, 2023,
  • [33] Recent Advances of Efficient Design of Terahertz Quantum-Cascade Lasers
    Rajesh Sharma
    Harpreet Kaur
    Manjot Singh
    Plasmonics, 2021, 16 : 449 - 461
  • [34] Effect of injection coupling strength on terahertz quantum-cascade lasers
    Li, H.
    Cao, J. C.
    SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2011, 26 (09)
  • [35] Mechanisms of temperature performance degradation in terahertz quantum-cascade lasers
    Indjin, D
    Harrison, P
    Kelsall, RW
    Ikonic, Z
    APPLIED PHYSICS LETTERS, 2003, 82 (09) : 1347 - 1349
  • [36] Continuous-wave operation of terahertz quantum-cascade lasers
    Barbieri, S
    Alton, J
    Dhillon, SS
    Beere, HE
    Evans, M
    Linfield, EH
    Davies, AG
    Ritchie, DA
    Köhler, R
    Tredicucci, A
    Beltram, F
    IEEE JOURNAL OF QUANTUM ELECTRONICS, 2003, 39 (04) : 586 - 591
  • [37] Effects of injector barrier on performance of terahertz quantum-cascade lasers
    Luo, H.
    Laframboise, S. R.
    Wasilewski, Z. R.
    Liu, H. C.
    ELECTRONICS LETTERS, 2007, 43 (11) : 633 - 635
  • [38] New Designs of Laser Transitions in Terahertz Quantum-Cascade Lasers
    Ushakov, D. V.
    Afonenko, A. A.
    Ponomarev, D. S.
    Pushkarev, S. S.
    Gavrilenko, V. I.
    Khabibullin, R. A.
    RADIOPHYSICS AND QUANTUM ELECTRONICS, 2022, 65 (5-6) : 461 - 470
  • [39] Terahertz quantum-cascade lasers based on an interlaced photon-phonon cascade
    Köhler, R
    Tredicucci, A
    Mauro, C
    Beltram, F
    Beere, HE
    Linfield, EH
    Davies, AG
    Ritchie, DA
    APPLIED PHYSICS LETTERS, 2004, 84 (08) : 1266 - 1268
  • [40] Emission spectra of terahertz quantum-cascade lasers based on the terahertz quantum-well photodetectors
    Tan Zhi-Yong
    Gun Xu-Guang
    Can Jun-Cheng
    Li Hua
    Han Ying-Jun
    ACTA PHYSICA SINICA, 2010, 59 (04) : 2391 - 2395
12345