Title :
Terahertz quantum cascade lasers
Author :
Davies, G. ; Linfield, E.
Author_Institution :
Sch. of Electron. & Electr. Eng., Leeds Univ., UK
Abstract :
Quantum cascade lasers operating at far-infrared (terahertz) frequencies have now been demonstrated. We review the fabrication, operation, and performance of these lasers, and indicate recent results in which devices have been developed to operate continuous wave, at temperatures greater than 77 K, emit at frequencies down to 3.5 THz, and produce tens of milli-Watts of power. These results are an encouraging step towards a widely applicable solid-state terahertz source, and the development of terahertz photonics.
Keywords :
quantum cascade lasers; submillimetre wave lasers; 3.5 THz; 77 K; CW operation; far-infrared laser; output power; solid-state terahertz source; terahertz photonics; terahertz quantum cascade laser; Biomedical optical imaging; Electromagnetic spectrum; Electrons; Frequency; Microwave devices; Optical sensors; Quantum cascade lasers; Solid lasers; Solid state circuits; Ultrafast optics;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1212478
