Unraveling of free-carrier absorption for terahertz radiation in heterostructures
(2011) In Physical Review B (Condensed Matter and Materials Physics) 84(20).- Abstract
- The relation between free-carrier absorption and intersubband transitions in semiconductor heterostructures is resolved by comparing a sequence of structures. Our numerical and analytical results show how free-carrier absorption evolves from the intersubband transitions in the limit of infinite number of wells with vanishing barrier width. It is explicitly shown that the integral of the absorption over frequency matches the value obtained by he f-sum rule. This shows that a proper treatment of intersubband transitions is fully sufficient to simulate the entire electronic absorption in heterostructure THz devices.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2252575
- author
- Wacker, Andreas LU ; Bastard, Gerald ; Carosella, Francesca ; Ferreira, Robson and Dupont, Emmanuel
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 84
- issue
- 20
- article number
- 205319
- publisher
- American Physical Society
- external identifiers
-
- wos:000297106600009
- scopus:82755191621
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.84.205319
- language
- English
- LU publication?
- yes
- id
- b2452db5-30c5-4539-a194-3f50f6d1ae4a (old id 2252575)
- date added to LUP
- 2016-04-01 14:21:26
- date last changed
- 2023-11-13 06:22:54
@article{b2452db5-30c5-4539-a194-3f50f6d1ae4a, abstract = {{The relation between free-carrier absorption and intersubband transitions in semiconductor heterostructures is resolved by comparing a sequence of structures. Our numerical and analytical results show how free-carrier absorption evolves from the intersubband transitions in the limit of infinite number of wells with vanishing barrier width. It is explicitly shown that the integral of the absorption over frequency matches the value obtained by he f-sum rule. This shows that a proper treatment of intersubband transitions is fully sufficient to simulate the entire electronic absorption in heterostructure THz devices.}}, author = {{Wacker, Andreas and Bastard, Gerald and Carosella, Francesca and Ferreira, Robson and Dupont, Emmanuel}}, issn = {{1098-0121}}, language = {{eng}}, number = {{20}}, publisher = {{American Physical Society}}, series = {{Physical Review B (Condensed Matter and Materials Physics)}}, title = {{Unraveling of free-carrier absorption for terahertz radiation in heterostructures}}, url = {{https://lup.lub.lu.se/search/files/3931375/2278739.pdf}}, doi = {{10.1103/PhysRevB.84.205319}}, volume = {{84}}, year = {{2011}}, }