CW-THz wave generation using a multimode semiconductor laser at room temperature

Latkowski, Sylwester, Landais, Pascal, Surre, Frederic and Lynch, Stephen Anthony ORCID: https://orcid.org/0000-0001-9818-2284 2007. CW-THz wave generation using a multimode semiconductor laser at room temperature. Presented at: LEOS 2007 - The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society, Lake Buena Vista, FL, USA, 21-25 October 2007. Published in: Golovchenko, E. and Ünlü, M. S. eds. LEOS 2007 - The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Piscataway, NJ: IEEE, pp. 864-865. 10.1109/LEOS.2007.4382682

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Abstract

Multimode semiconductor lasers under certain DC bias conditions generate electromagnetic waves from the beating between the longitudinal lasing modes. The frequency of those waves is directly related to the free spectral range of the involved modes. Our recent experimental work is carried out on slotted Fabry-Perot lasers with mode separation of 330 GHz. The devices are at room temperature biased at 3 times the threshold current. Using a bolometer coupled to an FT-IR interferometer we are able to observe radiation at 660 GHz, in the terahertz range.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	IEEE
ISBN:	9781424409259
Last Modified:	24 Oct 2022 10:48
URI:	https://orca.cardiff.ac.uk/id/eprint/45935

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