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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 1, Iss. 12 — Dec. 8, 1997
  • pp: 385–389

Ultrafast optical excitation of a combined coherent-squeezed phonon field in SrTiO3

G. A. Garrett, J. F. Whitaker, A. K. Sood, and R. Merlin  »View Author Affiliations

Optics Express, Vol. 1, Issue 12, pp. 385-389 (1997)

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We have simultaneously excited a coherent and a squeezed phonon field in SrTiO3 using femtosecond laser pulses and stimulated Raman scattering. The frequency of the coherent state (~ 1.3 THz) is that of the A1g-component of the soft mode responsible for the cubic-tetragonal phase transformation at ≈ 110 K. The squeezed field involves a continuum of transverse acoustic phonons dominated by a narrow peak in the density of states at ~ 6.9 THz.

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OCIS Codes
(270.1670) Quantum optics : Coherent optical effects
(290.5910) Scattering : Scattering, stimulated Raman
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:
Focus Issue: Coherent Phenomena in Solids

Original Manuscript: September 30, 1997
Published: December 8, 1997

Gregory Garrett, John Whitaker, Ajay Sood, and Roberto Merlin, "Ultrafast Optical Excitation of a Combined Coherent-Squeezed Phonon field in SrTiO3," Opt. Express 1, 385-389 (1997)

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  1. R. Merlin, Generating coherent THz phonons with light pulses, Solid State Commun. 102, 207-220 (1997). [CrossRef]
  2. G. A. Garrett, A. G. Rojo, A. K. Sood, J. F. Whitaker and R. Merlin, Vacuum squeezing of solids: macroscopic quantum states driven by light pulses, Science 275, 1638-1640 (1997). [CrossRef] [PubMed]
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