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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 7 — Jul. 1, 2013
  • pp: 1911–1921

Ultrafast ellipsometric interferometry for direct detection of coherent phonon strain pulse profiles

Osamu Matsuda, Motonobu Tomoda, Takehiro Tachizaki, Shun Koiwa, Atsushi Ono, Kae Aoki, Ryan P. Beardsley, and Oliver B. Wright  »View Author Affiliations


JOSA B, Vol. 30, Issue 7, pp. 1911-1921 (2013)
http://dx.doi.org/10.1364/JOSAB.30.001911


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Abstract

We describe an ultrafast optical technique to quantitatively detect picosecond ultrasonic displacements of solid surfaces, thus giving access to the longitudinal strain pulse shape. Transient optical reflectance changes recorded at oblique optical incidence with a common-path interferometric configuration based on ultrafast ellipsometry monitor gigahertz coherent phonon pulses. We demonstrate for a tungsten film the quantitative extraction of the strain pulse shape free of distortions arising from the photoelastic effect, and analyze the results with the two-temperature model to obtain the value g3×1017Wm3K1 for the electron–phonon coupling constant. Analysis of the data also reveals a thermo-optic contribution.

© 2013 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(320.0320) Ultrafast optics : Ultrafast optics
(320.5390) Ultrafast optics : Picosecond phenomena

ToC Category:
Physical Optics

History
Original Manuscript: March 18, 2013
Revised Manuscript: April 27, 2013
Manuscript Accepted: April 30, 2013
Published: June 19, 2013

Citation
Osamu Matsuda, Motonobu Tomoda, Takehiro Tachizaki, Shun Koiwa, Atsushi Ono, Kae Aoki, Ryan P. Beardsley, and Oliver B. Wright, "Ultrafast ellipsometric interferometry for direct detection of coherent phonon strain pulse profiles," J. Opt. Soc. Am. B 30, 1911-1921 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-7-1911


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