Title :
Doping-controlled coherent electron-phonon coupling in vanadium dioxide
Author :
Appavoo, Kannatassen ; Bin Wang ; Nag, Joyeeta ; Sfeir, Matthew Y. ; Pantelides, Sokrates T. ; Haglund, Richard F.
Author_Institution :
Interdiscipl. Mater. Sci., Vanderbilt Univ., Nashville, TN, USA
Abstract :
Broadband femtosecond transient spectroscopy and density functional calculations reveal that substitutional tungsten doping of a VO2 film changes the coherent phonon response compared to the undoped film due to altered electronic and structural dynamics.
Keywords :
density functional theory; high-speed optical techniques; light coherence; optical control; optical couplers; optical films; tungsten; vanadium compounds; VO2:W; altered electronic dynamics; altered structural dynamics; broadband femtosecond transient spectroscopy; density functional calculations; doping-controlled coherent electron-phonon coupling; substitutional tungsten doping; vanadium dioxide film; Broadband communication; Doping; Optical films; Optical switches; Phonons; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
