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Low-threshold terahertz Si:As laser
Pavlov, Sergey and Böttger, Ute and Hübers, Heinz-Wilhelm and Zhukavin, Roman and Kovalevsky, Konstantin and Tsyplenkov, Veniamin and Shastin, Valery and Abrosimov, Nikolay and Riemann, Helge (2007) Low-threshold terahertz Si:As laser. Applied Physics Letters, 90, . American Institute of Physics. DOI: 10.1063/1.2720271.
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Official URL: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000090000014141109000001&idtype=cvips&gifs=yes
Abstract
The optical threshold of terahertz intracenter arsenic-doped silicon lasers has been reduced by two orders of magnitude by applying a compressive force to the laser crystal. The Si:As lasers were optically excited with radiation from a CO<sub>2</sub> laser operating at a wavelength of 10.59 µm. The lowest threshold intensity of 8 kW/cm<sup>2</sup> was realized at about 3×10<sup>8</sup> Pa stress applied along the [001] crystal axis. The uniaxial stress breaks the resonant interaction of electrons bound to donors with intervalley f phonons. This changes the upper laser state from 2p<sub>±</sub> to 2p<sub>0</sub>, lowers the laser threshold, and increases the output power. ©2007 American Institute of Physics
| Document Type: | Article | ||||||||||||||||||||
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| Title: | Low-threshold terahertz Si:As laser | ||||||||||||||||||||
| Authors: |
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| Date: | 02 April 2007 | ||||||||||||||||||||
| Journal or Publication Title: | Applied Physics Letters | ||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||
| Volume: | 90 | ||||||||||||||||||||
| DOI: | 10.1063/1.2720271 | ||||||||||||||||||||
| Page Range: | |||||||||||||||||||||
| Publisher: | American Institute of Physics | ||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||
| Keywords: | arsenic; silicon; elemental semiconductors; semiconductor lasers; submillimetre wave lasers; optical pumping; phonons | ||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||
| HGF - Program Themes: | W EW - Erforschung des Weltraums | ||||||||||||||||||||
| DLR - Research area: | Space | ||||||||||||||||||||
| DLR - Program: | W EW - Erforschung des Weltraums | ||||||||||||||||||||
| DLR - Research theme (Project): | W - Projekt SOFIA (old) | ||||||||||||||||||||
| Location: | Berlin-Adlershof | ||||||||||||||||||||
| Institutes and Institutions: | Institute of Planetary Research > Terahertz and Infrared Sensors | ||||||||||||||||||||
| Deposited By: | Dr. Sergey Pavlov | ||||||||||||||||||||
| Deposited On: | 10 Jul 2007 | ||||||||||||||||||||
| Last Modified: | 15 Jan 2010 00:52 |
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