Unconventional Photoactive Solids pp 165-169 | Cite as
Vibrational Dynamics of Hydrogen Bonded Solids: Phonons and Optical Damage
Chapter
Abstract
In the last few years we have used picosecond time-resolved coherent Raman scattering to study vibrational relaxation in low temperature molecular crystals. In 1983 we made the very interesting observation that the optical phonons (w = 30–100 cm−1) of hydrogen bonded crystals had exceedingly long lifetimes, often in the nanosecond range [1]. We later studied a number of materials including amino acids, peptides, and acetanilide [2]. The long lifetimes imply extremely sharp Raman spectra with lorentzian linewidths in the range of .005 cm−1.
Keywords
Optical Phonon Defect Concentration Relaxation Oscillator Vibrational Relaxation Picosecond Pulse
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References
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© Plenum Press, New York 1988