Title :
Transient Effects in Phase-Matched Excitation of a Terahertz Surface Wave by a Short Laser Pulse with Tilted Intensity Front
Author :
Bakunov, M.I. ; Tsarev, M.V. ; Maslov, A.V.
Author_Institution :
Nizhny Novgorod Univ., Nizhny Novgorod
Abstract :
In this paper, the theory of surface plasmon polaritons (SPP) generation is extended using the subluminal scheme to the case when the strip-like optical spot scans a finite distance on a semiconductor surface. It is shown that the proposed technique offers a flexible mechanism of controlling both the excited wavepacket spectral width and its central frequency, thus making this excitation scheme extremely promising for future THz surface spectroscopy applications. Finally, the optimal parameters maximizing the peak electric field in the generated SPP and the SPP energy are found.
Keywords :
high-speed optical techniques; laser beams; optical phase matching; polaritons; submillimetre wave spectroscopy; surface plasmons; THz surface spectroscopy applications; phase-matched excitation; semiconductor surface; short laser pulse; strip-like optical spot; subluminal scheme; terahertz surface wave; tilted intensity front; transient effects; wavepacket spectral width; Frequency conversion; Laser excitation; Laser theory; Optical frequency conversion; Optical pulses; Optical surface waves; Plasmons; Semiconductor lasers; Surface emitting lasers; Surface waves;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386289
