Garcia, M., Normand, E., Stanley, C.R., Ironside, C.N., Farmer, C.D., Duxbury, G. and Langford, N. (2003) An AlGaAsGaAs quantum cascade laser operating with a thermoelectric cooler for spectroscopy of NH3. Optics Communications, 226, pp. 39-43. (doi: 10.1016/j.optcom.2003.07.041)
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Publisher's URL: http://dx.doi.org/10.1016/j.optcom.2003.07.041
Abstract
A new design of AlGaAsGaAs quantum cascade laser (QCL) operating at a wavelength around 11.2 μm is reported. An improved injection region and increased barrier height in the active region have enabled high temperature operation with reduced temperature dependence of the threshold current. The laser has been employed at temperatures up to 244 K (accessible with a thermoelectric cooler) for spectroscopy of gas phase NH<sub>3</sub>, using the injected current pulse to linearly tune a single mode of its multi-mode Fabry-Perot output through an absorption line of the gas.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Stanley, Professor Colin and Ironside, Professor Charles |
| Authors: | Garcia, M., Normand, E., Stanley, C.R., Ironside, C.N., Farmer, C.D., Duxbury, G., and Langford, N. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering University Centres > Glasgow Materials Research Initiative |
| Journal Name: | Optics Communications |
| ISSN: | 0030-4018 |
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