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Title: Two-well terahertz quantum cascade lasers with suppressed carrier leakage

Abstract

The mechanisms that limit the temperature performance of diagonal GaAs/Al0.15GaAs0.85-based terahertz quantum cascade lasers (THz-QCLs) have been identified as thermally activated leakage of charge carriers through excited states into the continuum. THz-QCLs with energetically higher-laying excited states supported by sufficiently high barriers aim to eliminate these leakage mechanisms and lead to improved temperature performance. Although suppression of thermally activated carrier leakage was realized in a three-well THz-QCL based on a resonant-phonon scheme, no improvement in the temperature performance was reported thus far. Here, we report a major improvement in the temperature performance of a two-quantum-well direct-phonon THz-QCL structure. We show that the improved laser performance is due to the suppression of the thermally activated carrier leakage into the continuum with the increase in the injection barrier height. Furthermore, we demonstrate that high-barrier two-well structures can support a clean three-level laser system at elevated temperatures, which opens the opportunity to achieve temperature performance beyond the state-of-the-art.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2];  [3]
+ Show Author Affiliations
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Bar-Ilan Univ., Ramat Gan (Israel)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1399568
Report Number(s):
SAND-2017-8933J
Journal ID: ISSN 0003-6951; 656406
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 111; Journal Issue: 11; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Albo, Asaf, Flores, Yuri V., Hu, Qing, and Reno, John L. Two-well terahertz quantum cascade lasers with suppressed carrier leakage. United States: N. p., 2017. Web. doi:10.1063/1.4996567.
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Albo, Asaf, Flores, Yuri V., Hu, Qing, & Reno, John L. Two-well terahertz quantum cascade lasers with suppressed carrier leakage. United States. https://doi.org/10.1063/1.4996567
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Albo, Asaf, Flores, Yuri V., Hu, Qing, and Reno, John L. Mon . "Two-well terahertz quantum cascade lasers with suppressed carrier leakage". United States. https://doi.org/10.1063/1.4996567. https://www.osti.gov/servlets/purl/1399568.
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@article{osti_1399568,
title = {Two-well terahertz quantum cascade lasers with suppressed carrier leakage},
author = {Albo, Asaf and Flores, Yuri V. and Hu, Qing and Reno, John L.},
abstractNote = {The mechanisms that limit the temperature performance of diagonal GaAs/Al0.15GaAs0.85-based terahertz quantum cascade lasers (THz-QCLs) have been identified as thermally activated leakage of charge carriers through excited states into the continuum. THz-QCLs with energetically higher-laying excited states supported by sufficiently high barriers aim to eliminate these leakage mechanisms and lead to improved temperature performance. Although suppression of thermally activated carrier leakage was realized in a three-well THz-QCL based on a resonant-phonon scheme, no improvement in the temperature performance was reported thus far. Here, we report a major improvement in the temperature performance of a two-quantum-well direct-phonon THz-QCL structure. We show that the improved laser performance is due to the suppression of the thermally activated carrier leakage into the continuum with the increase in the injection barrier height. Furthermore, we demonstrate that high-barrier two-well structures can support a clean three-level laser system at elevated temperatures, which opens the opportunity to achieve temperature performance beyond the state-of-the-art.},
doi = {10.1063/1.4996567},
journal = {Applied Physics Letters},
number = 11,
volume = 111,
place = {United States},
year = {2017},
month = {9}
}
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https://doi.org/10.1063/1.4996567
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Cited by: 22 works
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Works referenced in this record:

Tradeoffs between oscillator strength and lifetime in terahertz quantum cascade lasers
journal, November 2016

  • Chan, Chun Wang I.; Albo, Asaf; Hu, Qing
  • Applied Physics Letters, Vol. 109, Issue 20
  • DOI: 10.1063/1.4967244

Investigating temperature degradation in THz quantum cascade lasers by examination of temperature dependence of output power
journal, March 2015

  • Albo, Asaf; Hu, Qing
  • Applied Physics Letters, Vol. 106, Issue 13
  • DOI: 10.1063/1.4916961

Terahertz quantum cascade lasers operating up to ∼ 200 K with optimized oscillator strength and improved injection tunneling
journal, January 2012

  • Fathololoumi, S.; Dupont, E.; Chan, C. W. I.
  • Optics Express, Vol. 20, Issue 4
  • DOI: 10.1364/OE.20.003866

Two-well terahertz quantum-cascade laser with direct intrawell-phonon depopulation
journal, October 2009

  • Kumar, Sushil; Chan, Chun Wang I.; Hu, Qing
  • Applied Physics Letters, Vol. 95, Issue 14
  • DOI: 10.1063/1.3243459

186 K operation of terahertz quantum-cascade lasers based on a diagonal design
journal, March 2009

  • Kumar, Sushil; Hu, Qing; Reno, John L.
  • Applied Physics Letters, Vol. 94, Issue 13
  • DOI: 10.1063/1.3114418

Terahertz quantum cascade lasers with double-resonant-phonon depopulation
journal, June 2006

  • Williams, Benjamin S.; Kumar, Sushil; Qin, Qi
  • Applied Physics Letters, Vol. 88, Issue 26
  • DOI: 10.1063/1.2216112

Carrier Leakage Dynamics in Terahertz Quantum Cascade Lasers
journal, October 2017

Carrier leakage into the continuum in diagonal GaAs/Al 0.15 GaAs terahertz quantum cascade lasers
journal, December 2015

  • Albo, Asaf; Hu, Qing
  • Applied Physics Letters, Vol. 107, Issue 24
  • DOI: 10.1063/1.4937455

Tunable Fano interference in intersubband absorption
journal, January 1996

  • Faist, Jérome; Sirtori, Carlo; Capasso, Federico
  • Optics Letters, Vol. 21, Issue 13
  • DOI: 10.1364/OL.21.000985

Temperature dependence of the key electro-optical characteristics for midinfrared emitting quantum cascade lasers
journal, August 2010

  • Botez, D.; Kumar, S.; Shin, J. C.
  • Applied Physics Letters, Vol. 97, Issue 7
  • DOI: 10.1063/1.3478836

Experimental investigation of terahertz quantum cascade laser with variable barrier heights
journal, April 2014

  • Jiang, Aiting; Matyas, Alpar; Vijayraghavan, Karun
  • Journal of Applied Physics, Vol. 115, Issue 16
  • DOI: 10.1063/1.4873461

Temperature-Driven Enhancement of the Stimulated Emission Rate in Terahertz Quantum Cascade Lasers
journal, February 2017

Room temperature negative differential resistance in terahertz quantum cascade laser structures
journal, August 2016

  • Albo, Asaf; Hu, Qing; Reno, John L.
  • Applied Physics Letters, Vol. 109, Issue 8
  • DOI: 10.1063/1.4961617

Broadband THz lasing from a photon-phonon quantum cascade structure
journal, January 2010

  • Scalari, G.; Amanti, M. I.; Walther, C.
  • Optics Express, Vol. 18, Issue 8
  • DOI: 10.1364/OE.18.008043

Thermally activated leakage current in high-performance short-wavelength quantum cascade lasers
journal, April 2013

  • Flores, Y. V.; Semtsiv, M. P.; Elagin, M.
  • Journal of Applied Physics, Vol. 113, Issue 13
  • DOI: 10.1063/1.4798358

Ground state terahertz quantum cascade lasers
journal, October 2012

  • Chan, Chun Wang I.; Hu, Qing; Reno, John L.
  • Applied Physics Letters, Vol. 101, Issue 15
  • DOI: 10.1063/1.4759043

Impact of Interface Roughness Scattering on the Performance of GaAs/Al x Ga 1–x As Terahertz Quantum Cascade Lasers
journal, June 2017

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    Works referencing / citing this record:

    Split-well direct-phonon terahertz quantum cascade lasers
    journal, May 2019

    • Albo, Asaf; Flores, Yuri V.; Hu, Qing
    • Applied Physics Letters, Vol. 114, Issue 19
    • DOI: 10.1063/1.5089854

    Terahertz quantum cascade laser with non-resonant extraction
    journal, May 2019

    • Baranov, A. N.; Nguyen-Van, H.; Loghmari, Z.
    • AIP Advances, Vol. 9, Issue 5
    • DOI: 10.1063/1.5092855

    Thermoelectrically cooled THz quantum cascade laser operating up to 210 K
    journal, July 2019

    • Bosco, L.; Franckié, M.; Scalari, G.
    • Applied Physics Letters, Vol. 115, Issue 1
    • DOI: 10.1063/1.5110305

    Thermoelectrically cooled THz quantum cascade laser operating up to 210 K
    text, January 2019

    Thermoelectrically cooled THz quantum cascade laser operating up to 210 K
    text, January 2019

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