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Proceedings Paper

Development of trains of ultrashort strain solitons in sapphire and ruby
Author(s): Otto L Muskens; Jaap I. Dijkhuis
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Paper Abstract

Ultrashort strain pulses are a promising tool for the analysis and manipulation of condensed matter, thin films, and nanostructures. We present a new and unconventional way to generate coherent longitudinal acoustic wavepackets of high amplitude in the THz frequency range using the nonlinear development of picosecond strain pulses in a crystal. Our work [PRL 89, 285504 (2002)] demonstrated breakup of an initial wavepacket into a train of ultrashort strain solitons, using position-dependent Brillouin scattering. We extend in this paper the interpretation of the Brillouin scattering data in terms of optical Bragg reflections off the moving soliton train, using the analogy with an N-slit diffraction grating. Finally, we show that these short pulses can excite an electronic two-level system at THz resonance frequency, allowing for coherent amplification and even the development of a phonon laser.

Paper Details

Date Published: 16 June 2004
PDF: 14 pages
Proc. SPIE 5352, Ultrafast Phenomena in Semiconductors and Nanostructure Materials VIII, (16 June 2004); doi: 10.1117/12.529170
Show Author Affiliations
Otto L Muskens, Univ. of Utrecht (Netherlands)
Jaap I. Dijkhuis, Univ. of Utrecht (Netherlands)


Published in SPIE Proceedings Vol. 5352:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials VIII
Kong-Thon Tsen; Jin-Joo Song; Hongxing Jiang, Editor(s)

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