Masashi Yamaguchi
Assistant Professor of Physics

B.S., Applied Physics, Hokkaido University, 1986
M.S., Applied Physics, Hokkaido University, 1988
Ph.D., Applied Physics, Hokkaido University, 1991

Career Highlights:
Yamaguchi’s accomplishments include the fundamental understanding of structural evolution in partially ordered crystals, glasses, and supercooled liquids using time-domain and frequency domain spectroscopy. Specific examples are discovery of a new acoustic anomaly in the phase transition of quantum parelectric crystals (the dielectric constant increases when the temperature decreases); measurements of elastic stiffness of MOCVD (Metal Organic Chemical Vapor Deposition) grown lattice mismatched nitride semiconductors; manipulation of acoustic phonons using impulsive stimulated Brillouin light scattering; polariton based THz spectroscopy for study of large-scale fluctuations of ferroelectric nanodomains and the THz acoustic spectroscopy for the study of elastic modulus constant of amorphous thin films.

Research Areas:
Structural and electronic dynamics in condensed matter, THz spectroscopy of advanced materials and THz science and technology.

Recent Publications:

  1. “Acoustic Vibrations in Silicon Submicron Spiral Arrays”, M. Yamaguchi, J. Liu, D. Ye, and T. Lu, J. App. Phys., 106, 033517(2009).
  2.  “Terahertz Wave Generation in Nitrogen Gas Using Shaped Optical Pulses”, M. Yamaguchi and J. Das J. Opt. Soc. Am. B, 26, A90-A94 (2009).
  3. ”Water Vapor: An Extraordinary Terahertz Wave Source under Optical Excitation”, Keith Johnson, Matthew Price-Gallagher, Orval Mamer, Alain Lesimple, Clark Fletcher, Yunqing Chen, Xiaofei Lu, Masashi Yamaguchi, and X.-C. Zhang, Phys. Lett. A, 372, 6037-6040 (2008).
  4. ”Terahertz pulse generation from noble gases”, Y.Chen, M.Yamaguchi, M.Wang, and X.-C. Zhang, Appl.Phys.Lett., 91, 25116(2007).
  5. ”Coherent heterodyne time-domain spectroscopy covering the entire “terahertz gap”,N.Karpowicz, J.Dai,X.Lu,Y.Chen, M.Yamaguchi,H.Zhao,X.-C.Zhang,L.Zhang, C.Zhang,M. M.Price-Gallagher, C.Fletcher, O.Mamer, A.Lesimple, K.Johnson, Appl.Phys.Lett., 92, 011131(2008).
  6. “Terahertz phonon-polariton imaging for the application of chemical detection”, M. Yamaguchi, M. Wang, P. Suarez, J. High Speed Electr. System, 17, 355-365 (2007).
  7. High Pressure Studies of Optical Dephasing in Polymer Glasses”, M. J. McIntire, M. Yamaguchi, M. A. Kol’chenko, Y. G. Vainer, and E. L. Chronister, J. Phys. Chem. B, 110, 227-233 (2006).

Contact Information:
Masashi Yamaguchi
Rensselaer Polytechnic Institute
110 8th Street
Troy, NY 12180-3590 USA

(518) 276-3092
Personal Web Page:

Detailed CV