Nonlinear response of quantum cascade structures
Winge, David LU ; Franckie, Martin LU and Wacker, Andreas LU
(2012)
In Applied Physics Letters
101(21).
- Abstract
- The gain spectrum of a terahertz quantum cascade laser is analyzed by a nonequilibrium Green's functions approach. Higher harmonics of the response function were retrievable, providing a way to approach nonlinear phenomena in quantum cascade lasers theoretically. Gain is simulated under operation conditions and results are presented both for linear response and strong laser fields. An iterative way of reconstructing the field strength inside the laser cavity at lasing conditions is described using a measured value of the level of the losses of the studied system. Comparison with recent experimental data from time-domain-spectroscopy indicates that the experimental situation is beyond linear response.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3359735
- author
- Winge, David
LU
; Franckie, Martin
LU
and Wacker, Andreas
LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics Letters
- volume
- 101
- issue
- 21
- article number
- 211113
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000311477600013
- scopus:84869990285
- ISSN
- 0003-6951
- DOI
- 10.1063/1.4767373
- language
- English
- LU publication?
- yes
- id
- 4732fb13-748c-4cdd-8541-42642d65759a (old id 3359735)
- date added to LUP
- 2016-04-01 10:56:54
- date last changed
- 2023-11-10 09:10:29
@article{4732fb13-748c-4cdd-8541-42642d65759a,
abstract = {{The gain spectrum of a terahertz quantum cascade laser is analyzed by a nonequilibrium Green's functions approach. Higher harmonics of the response function were retrievable, providing a way to approach nonlinear phenomena in quantum cascade lasers theoretically. Gain is simulated under operation conditions and results are presented both for linear response and strong laser fields. An iterative way of reconstructing the field strength inside the laser cavity at lasing conditions is described using a measured value of the level of the losses of the studied system. Comparison with recent experimental data from time-domain-spectroscopy indicates that the experimental situation is beyond linear response.}},
author = {{Winge, David and Franckie, Martin and Wacker, Andreas}},
issn = {{0003-6951}},
language = {{eng}},
number = {{21}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Applied Physics Letters}},
title = {{Nonlinear response of quantum cascade structures}},
url = {{https://lup.lub.lu.se/search/files/2261510/3359761.pdf}},
doi = {{10.1063/1.4767373}},
volume = {{101}},
year = {{2012}},
}