Title :
CW-THz Wave Generation Using a Multimode Semiconductor Laser at Room Temperature
Author :
Latkowski, Sylwester ; Landais, Pascal ; Surre, Frederic ; Lynch, Stephen A.
Author_Institution :
Dublin City Univ., Dublin
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.
Keywords :
distributed Bragg reflector lasers; semiconductor lasers; submillimetre waves; CW-THz wave generation; DC bias conditions; FT-IR interferometer; free spectral range; longitudinal lasing modes; multimode semiconductor laser; slotted Fabry-Perot lasers; Semiconductor lasers; Temperature;
Conference_Titel :
Lasers and Electro-Optics Society, 2007. LEOS 2007. The 20th Annual Meeting of the IEEE
Conference_Location :
Lake Buena Vista, FL
Print_ISBN :
978-1-4244-0925-9
Electronic_ISBN :
1092-8081
DOI :
10.1109/LEOS.2007.4382682
