Title :
Coherent hybrid modes in the THz emission from InAs and InSb
Author :
Hasselbeck, M.P. ; Stalnaker, D. ; Schlie, L.A.
Author_Institution :
USAF Res. Labs., Kirtland AFB, NM, USA
Abstract :
Summary form only given. When confined to a dimension much smaller than their characteristic wavelength, coupled longitudinal modes of polar semiconductors can radiate. We impulsively excite coherent, collective modes of bulk InAs and InSb using 30 fs near-infrared laser pulses and detect the emitted THz frequency radiation by using a bolometer and the broadband interferometric technique of Kersting et al (Phys. Rev. Lett., vol. 79, p. 3038, 1997). All our results are insensitive to excitation power and crystal orientation.
Keywords :
III-V semiconductors; bolometers; coherence; electromagnetic wave interferometry; indium compounds; microwave photonics; optical pumping; phonon-plasmon interactions; polar semiconductors; semiconductor plasma; submillimetre wave generation; 30 fs; InAs; InSb; THz emission; bolometer; broadband interferometric technique; bulk InAs; bulk InSb; characteristic wavelength; coherent collective mode excitation; coherent hybrid modes; confined coupled longitudinal modes; coupled plasmon-phonon system; crystal orientation; emitted THz frequency radiation; excitation power; near-infrared laser pulses; polar semiconductors; Delay; Fourier transforms; Frequency; Laser excitation; Laser modes; Phonons; Plasma density; Plasma measurements; Plasma temperature; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2001. QELS '01. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-663-X
DOI :
10.1109/QELS.2001.962067
