Abstract
Excitons, bound electron-hole pairs, possess distinct physical properties from free electrons and holes that can be employed to improve the performance of optoelectronic devices. In particular, the signatures of excitons are enhanced optical absorption and radiative emission. These characteristics could be of major benefit for the laser cooling of semiconductors, a process which has stringent requirements on the parasitic absorption of incident radiation and the internal quantum efficiency. Here we experimentally demonstrate the dominant ultrafast excitonic super-radiance of our quantum well structure from 78 K up to room temperature. The experimental results are followed by our detailed discussions about the advantages and limitations of this method.
| Original language | English |
|---|---|
| Title of host publication | Optical and Electronic Cooling of Solids |
| Publisher | SPIE |
| Volume | 9765 |
| ISBN (Electronic) | 9781510600003 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | Optical and Electronic Cooling of Solids - San Francisco, United States Duration: Feb 17 2016 → Feb 18 2016 |
Other
| Other | Optical and Electronic Cooling of Solids |
|---|---|
| Country | United States |
| City | San Francisco |
| Period | 2/17/16 → 2/18/16 |
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Keywords
- Carrier density
- Excitonic super-radiance
- Excitons
- Quantum wells
- Radiative lifetime
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
Cite this
Observation of excitonic super-radiance in quantum well structures and its application for laser cooling of solids. / Hassani Nia, Iman; Weinberg, David; Wheaton, Skylar; Weiss, Emily A; Mohseni, Hooman.
Optical and Electronic Cooling of Solids. Vol. 9765 SPIE, 2016. 97650J.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Observation of excitonic super-radiance in quantum well structures and its application for laser cooling of solids
AU - Hassani Nia, Iman
AU - Weinberg, David
AU - Wheaton, Skylar
AU - Weiss, Emily A
AU - Mohseni, Hooman
PY - 2016
Y1 - 2016
N2 - Excitons, bound electron-hole pairs, possess distinct physical properties from free electrons and holes that can be employed to improve the performance of optoelectronic devices. In particular, the signatures of excitons are enhanced optical absorption and radiative emission. These characteristics could be of major benefit for the laser cooling of semiconductors, a process which has stringent requirements on the parasitic absorption of incident radiation and the internal quantum efficiency. Here we experimentally demonstrate the dominant ultrafast excitonic super-radiance of our quantum well structure from 78 K up to room temperature. The experimental results are followed by our detailed discussions about the advantages and limitations of this method.
AB - Excitons, bound electron-hole pairs, possess distinct physical properties from free electrons and holes that can be employed to improve the performance of optoelectronic devices. In particular, the signatures of excitons are enhanced optical absorption and radiative emission. These characteristics could be of major benefit for the laser cooling of semiconductors, a process which has stringent requirements on the parasitic absorption of incident radiation and the internal quantum efficiency. Here we experimentally demonstrate the dominant ultrafast excitonic super-radiance of our quantum well structure from 78 K up to room temperature. The experimental results are followed by our detailed discussions about the advantages and limitations of this method.
KW - Carrier density
KW - Excitonic super-radiance
KW - Excitons
KW - Quantum wells
KW - Radiative lifetime
UR - http://www.scopus.com/inward/record.url?scp=84982298132&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84982298132&partnerID=8YFLogxK
U2 - 10.1117/12.2211982
DO - 10.1117/12.2211982
M3 - Conference contribution
VL - 9765
BT - Optical and Electronic Cooling of Solids
PB - SPIE
ER -