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

fYear

2007

fDate

17-22 June 2007

Firstpage

1

Lastpage

1

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CLEOE-IQEC.2007.4386289

Filename

4386289