Laser-induced transient grating setup with continuously tunable period

Journal Article · Tue Dec 15 00:00:00 EST 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4936767· OSTI ID:22482626

Vega-Flick, A. ^[1]; Eliason, J. K.; Maznev, A. A.; Khanolkar, A.; Abi Ghanem, M.; Boechler, N. ^[2]; Alvarado-Gil, J. J. ^[3]

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1. Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
2. Department of Mechanical Engineering, University of Washington, Seattle, Washington 98195 (United States)
3. Applied Physics Department, CINVESTAV-Unidad Mérida, Carretera Antigua a Progreso Km 6, Cordemex, Mérida, Yucatán 97310 Mexico (Mexico)

We present a modification of the laser-induced transient grating setup enabling continuous tuning of the transient grating period. The fine control of the period is accomplished by varying the angle of the diffraction grating used to split excitation and probe beams. The setup has been tested by measuring dispersion of bulk and surface acoustic waves in both transmission and reflection geometries. The presented modification is fully compatible with optical heterodyne detection and can be easily implemented in any transient grating setup.

• OSTI ID: 22482626
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DIFFRACTION GRATINGS
EXCITATION
GEOMETRY
LASERS
MODIFICATIONS
SOUND WAVES
TRANSMISSION
TUNING