Abstract
AbstractThe results of an experimental investigation of the twofold degenerate vibrations in calcite (Eg‐type; phonon frequency ΩE/2πc = 721 cm−1) by means of active spectroscopy method, including a new modification of this method are reported. Beating of a biharmonic pump consisting of Nd: YAG laser radiation and tunable (narrow band or broad band) radiation from an optical parametric oscillator (OPO) was used to excite coherent optical phonons above the thermal level. Scattering of the second harmonic of Nd: YAG was used to detect these coherent vibrations. The components of the Raman scattering tensor for Eg phonons and the absolute sign of χ the component of the nonresonant cubic electronic susceptibility were measured.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
