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Generation of coherent phonons by coherent extreme ultraviolet radiation in a transient grating experiment

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5048023· OSTI ID:1609310
 [1];  [2];  [3];  [2];  [4];  [5];  [3];  [6];  [2];  [3];  [6];  [6];  [7];  [2];  [2];  [8];  [6];  [2];  [2];  [2] more »;  [9];  [5] « less
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); DOE/OSTI
  2. Elettra Sincrotrone Trieste, Basovizza, TS (Italy)
  3. Univ. of Bern (Switzerland). Inst. of Applied Physics
  4. Elettra Sincrotrone Trieste, Basovizza, TS (Italy); Istituto Officina dei Materiali CNR, Basovizza, TS (Italy)
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  6. Univ. of Colorado, Boulder, CO (United States)
  7. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  8. Univ. of Trento, Povo, TN (Italy)
  9. 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:
European Research Council (ERC); Gordon and Betty Moore Foundation; Swiss National Science Foundation (SNF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
FG02-00ER15087; FG02-99ER14982
OSTI ID:
1609310
Alternate ID(s):
OSTI ID: 1686153
OSTI ID: 1907876
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 113; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Nonlinear XUV-optical transient grating spectroscopy at the Si L 2,3 –edge journal May 2019
Exploring the multiparameter nature of EUV-visible wave mixing at the FERMI FEL journal July 2019
Full Spatiotemporal Control of Laser-Excited Periodic Surface Deformations journal August 2019
Nanoscale transient gratings excited and probed by extreme ultraviolet femtosecond pulses journal July 2019
Full spatiotemporal control of laser-excited periodic surface deformations text January 2019