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Photonics 2015, 2(2), 392-401; doi:10.3390/photonics2020392

Self Referencing Heterodyne Transient Grating Spectroscopy with Short Wavelength

1
Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
2
Laboratory of Ultrafast Spectroscopy, EPFL, LausanneCH 1015, Switzerland
3
NIF and Photon Sciences, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550, USA
4
IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120, USA
5
SIMES, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
6
Department of Physics, Temple University, Philadelphia, PA 19122, USA
7
Max Planck Institute of Microstructure Physics, Halle D 06120, Germany
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 16 March 2015 / Revised: 8 April 2015 / Accepted: 8 April 2015 / Published: 15 April 2015
(This article belongs to the Special Issue Extreme UV Lasers: Technologies and Applications)
View Full-Text   |   Download PDF [558 KB, uploaded 15 April 2015]   |  

Abstract

Heterodyning by a phase stable reference electric field is a well known technique to amplify weak nonlinear signals. For short wavelength, the generation of a reference field in front of the sample is challenging because of a lack of suitable beamsplitters. Here, we use a permanent grating which matches the line spacing of the transient grating for the creation of a phase stable reference field. The relative phase among the two can be changed by a relative translation of the permanent and transient gratings in direction orthogonal to the grating lines. We demonstrate the technique for a transient grating on a VO2 thin film and observe constructive as well as destructive interference signals. View Full-Text
Keywords: transient grating; heterodyne detection; extreme ultraviolet transient grating; heterodyne detection; extreme ultraviolet
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Grilj, J.; Sistrunk, E.; Jeong, J.; Samant, M.G.; Gray, A.X.; Dürr, H.A.; Parkin, S.S.P.; Gühr, M. Self Referencing Heterodyne Transient Grating Spectroscopy with Short Wavelength. Photonics 2015, 2, 392-401.

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