Generation of coherent phonons by coherent extreme ultraviolet radiation in a transient grating experiment
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Elettra Sincrotrone Trieste, Basovizza, TS (Italy)
- Univ. of Bern (Switzerland). Inst. of Applied Physics
- Elettra Sincrotrone Trieste, Basovizza, TS (Italy); Istituto Officina dei Materiali CNR, Basovizza, TS (Italy)
- Univ. of Colorado, Boulder, CO (United States)
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- Univ. of Trento, Povo, TN (Italy)
- CINVESTAV-Unidad Mérida, Yucatán (Mexico)
In this work, we investigate the excitation of coherent acoustic and optical phonons by ultrashort extreme ultraviolet (EUV) pulses produced by a free electron laser. Two crossed femtosecond EUV (wavelength 12.7 nm) pulses are used to excite coherent phonons at a wavelength of 280 nm, which are detected via diffraction of an optical probe beam. Longitudinal and surface acoustic waves are measured in BK-7 glass, diamond, and Bi4Ge3O12; in the latter material, the excitation of a coherent optical phonon mode is also observed. We discuss probing different acoustic modes in reflection and transmission geometries and frequency mixing of surface and bulk acoustic waves in the signal. The use of extreme ultraviolet radiation will allow the creation of tunable GHz to THz acoustic sources in any material without the need to fabricate transducer structures.
- Research Organization:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Colorado, Boulder, CO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; Gordon and Betty Moore Foundation; European Research Council (ERC); Swiss National Science Foundation (SNF)
- Grant/Contract Number:
- FG02-00ER15087; FG02-99ER14982; GBMF: 4538; 202804-TIMER
- OSTI ID:
- 1609310
- Alternate ID(s):
- OSTI ID: 1686153; OSTI ID: 1907876
- Journal Information:
- Applied Physics Letters, Vol. 113, Issue 22; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Full spatiotemporal control of laser-excited periodic surface deformations | text | January 2019 |
Exploring the multiparameter nature of EUV-visible wave mixing at the FERMI FEL
|
journal | July 2019 |
Nonlinear XUV-optical transient grating spectroscopy at the Si L 2,3 –edge
|
journal | May 2019 |
Nanoscale transient gratings excited and probed by extreme ultraviolet femtosecond pulses
|
journal | July 2019 |
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