Evidence of longitudinal acoustic phonon generation in Si doping superlattices by Ge prism-coupled THz laser radiation

Wilson T, Kasper E, Oehme M, Schulze J, Korolev K (2014)

Publication Type: Conference contribution

Publication year: 2014

Journal

IOP Conference Series: Materials Science and Engineering IOP Publishing: Conference Series

Publisher: Institute of Physics Publishing

Book Volume: 68

Conference Proceedings Title: IOP Conference Series: Materials Science and Engineering

Event location: Lille FR

DOI: 10.1088/1757-899X/68/1/012008

Abstract

We report on the direct excitation of 246 GHz longitudinal acoustic phonons in silicon doping superlattices by the resonant absorption of nanosecond-pulsed far-infrared laser radiation of the same frequency. A longitudinally polarized evanescent laser light field is coupled to the superlattice through a germanium prism providing total internal reflection at the superlattice interface. The ballistic phonon signal is detected by a superconducting aluminum bolometer. The sample is immersed in low-temperature liquid helium.

Involved external institutions

Universität Stuttgart DE Germany (DE) Marshall University US United States (USA) (US)

How to cite

APA:

Wilson, T., Kasper, E., Oehme, M., Schulze, J., & Korolev, K. (2014). Evidence of longitudinal acoustic phonon generation in Si doping superlattices by Ge prism-coupled THz laser radiation. In IOP Conference Series: Materials Science and Engineering. Lille, FR: Institute of Physics Publishing.

MLA:

Wilson, Thomas, et al. "Evidence of longitudinal acoustic phonon generation in Si doping superlattices by Ge prism-coupled THz laser radiation." Proceedings of the Symposium D on Phonons and Fluctuations in Low Dimensional Structures, Lille Institute of Physics Publishing, 2014.

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