Frequency modulations due to domain dynamics in terahertz quantum cascade lasers
(2023) In Journal of Applied Physics 133(12).- Abstract
The light output of quantum cascade lasers is strongly affected by electric field-domain oscillations if the laser shows electrical instabilities. This can result in a substantial broadening of the emission spectrum, which is investigated here by detailed simulations for a terahertz device. We explain how the light pulsation is affected by electrical injection conditions and external capacitances. Experimental data confirm that the oscillation frequencies are not essentially affected by circuit conditions, while a large external capacitance produces almost non-observable oscillations due to stabilization of the circuit.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/e0863d7c-ea76-417c-966b-3da8bfdf36ac
- author
- Önder, E. LU ; Winge, D. O. LU ; Franckié, M. LU ; Forrer, A. ; Senica, U. ; Scalari, G. and Wacker, A. LU
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Applied Physics
- volume
- 133
- issue
- 12
- article number
- 123101
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:85150868101
- ISSN
- 0021-8979
- DOI
- 10.1063/5.0137716
- project
- Quantum Cascade Lasers beyond general paradigms
- language
- English
- LU publication?
- yes
- id
- e0863d7c-ea76-417c-966b-3da8bfdf36ac
- date added to LUP
- 2023-05-23 09:52:57
- date last changed
- 2023-11-08 06:10:01
@article{e0863d7c-ea76-417c-966b-3da8bfdf36ac, abstract = {{<p>The light output of quantum cascade lasers is strongly affected by electric field-domain oscillations if the laser shows electrical instabilities. This can result in a substantial broadening of the emission spectrum, which is investigated here by detailed simulations for a terahertz device. We explain how the light pulsation is affected by electrical injection conditions and external capacitances. Experimental data confirm that the oscillation frequencies are not essentially affected by circuit conditions, while a large external capacitance produces almost non-observable oscillations due to stabilization of the circuit.</p>}}, author = {{Önder, E. and Winge, D. O. and Franckié, M. and Forrer, A. and Senica, U. and Scalari, G. and Wacker, A.}}, issn = {{0021-8979}}, language = {{eng}}, number = {{12}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Journal of Applied Physics}}, title = {{Frequency modulations due to domain dynamics in terahertz quantum cascade lasers}}, url = {{http://dx.doi.org/10.1063/5.0137716}}, doi = {{10.1063/5.0137716}}, volume = {{133}}, year = {{2023}}, }