ULTRAFAST MID-INFRARED PUMP-OPTICAL PROBE SPECTROSCOPY OF INSLULATING La2CuO4

ORAL

Abstract

We report some further progress on the excitation of coherent longitudinal acoustic phonons (CLAPs) in the Mott insulator La2CuO4 using intense ultrafast mid-infrared laser pulses measured by changes in the reflectivity (at 800 nm) as a function of pump-probe delay. This talk seeks to motivate the possible mechanisms that enable and resolve a below gap CLAP excitation. More generally, we also look toward implementing this coherent population of longitudinal acoustic phonons - a strain wave - as a reporter of low energy dynamics in quantum materials.

–

Presenters

  • Mustafa G Ali

    University of California, San Diego

Authors

  • Mustafa G Ali

    University of California, San Diego

  • Kelson Kaj

    University of California, San Diego

  • Varun Ramaprasad

    University of California, San Diego, University of California San Diego

  • Eli Zohglin

    University of California, Santa Barbara

  • Steven J Gomez

    University of California, Santa Barbara

  • Stephen D Wilson

    University of California, Santa Barbara

  • Richard D Averitt

    University of California, San Diego