Temperature dependent nonlinear response of quantum cascade structures
Winge, David LU and Wacker, Andreas LU
(2014)
In Optical and Quantum Electronics
46(4).
p.533-539
- Abstract
- Current response and gain spectrum of a terahertz quantum cascade laser is analyzed at different temperatures by a nonequilibrium Green's functions approach. The simulations are compared to recent results of time domain spectroscopy. Being able to retrieve higher harmonics of the response function, nonlinear phenomena in quantum cascade lasers are studied theoretically. For different temperatures, gain is simulated under operating conditions and related to the intensity inside the cavity, showing the degradation of performance with temperature. Resolving the electron densities in energy shows the breakdown of inversion at high intensities.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4417542
- author
- Winge, David
LU
and Wacker, Andreas
LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Terahertz, Quantum cascade lasers, Gain simulations, Nonlinear response, Gain clamping
- in
- Optical and Quantum Electronics
- volume
- 46
- issue
- 4
- pages
- 533 - 539
- publisher
- Springer
- external identifiers
-
- wos:000332094900006
- scopus:84895928383
- ISSN
- 0306-8919
- DOI
- 10.1007/s11082-013-9779-9
- language
- English
- LU publication?
- yes
- id
- 2d922236-5f7f-424b-967e-10c86c7c89c8 (old id 4417542)
- date added to LUP
- 2016-04-01 14:26:42
- date last changed
- 2023-09-03 14:36:25
@article{2d922236-5f7f-424b-967e-10c86c7c89c8,
abstract = {{Current response and gain spectrum of a terahertz quantum cascade laser is analyzed at different temperatures by a nonequilibrium Green's functions approach. The simulations are compared to recent results of time domain spectroscopy. Being able to retrieve higher harmonics of the response function, nonlinear phenomena in quantum cascade lasers are studied theoretically. For different temperatures, gain is simulated under operating conditions and related to the intensity inside the cavity, showing the degradation of performance with temperature. Resolving the electron densities in energy shows the breakdown of inversion at high intensities.}},
author = {{Winge, David and Wacker, Andreas}},
issn = {{0306-8919}},
keywords = {{Terahertz; Quantum cascade lasers; Gain simulations; Nonlinear response; Gain clamping}},
language = {{eng}},
number = {{4}},
pages = {{533--539}},
publisher = {{Springer}},
series = {{Optical and Quantum Electronics}},
title = {{Temperature dependent nonlinear response of quantum cascade structures}},
url = {{https://lup.lub.lu.se/search/files/3978366/4905361.pdf}},
doi = {{10.1007/s11082-013-9779-9}},
volume = {{46}},
year = {{2014}},
}