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Title: Fano interference at the excitation of coherent phonons: Relation between the asymmetry parameter and the initial phase of coherent oscillations

The theoretical assertion that the Fano asymmetry parameter and the asymptotic initial phase of a harmonic oscillator interacting with a continuum are interrelated is experimentally verified. By an example of coherent fully symmetric A{sub 1g} phonons in bismuth that are excited by ultrashort laser pulses at liquid helium temperature, it is demonstrated that, for negative values of the asymmetry parameter, the asymptotic phase increases as the modulus of the parameter decreases.
Authors:
;  [1]
  1. Russian Academy of Sciences, Institute of Solid State Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22472312
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 120; Journal Issue: 4; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ASYMMETRY; ASYMPTOTIC SOLUTIONS; BISMUTH; ELECTROMAGNETIC PULSES; EXCITATION; HARMONIC OSCILLATORS; HELIUM; INTERFERENCE; LASER RADIATION; LIQUIDS; OSCILLATIONS; PHONONS; SYMMETRY