Title :
Probing sub-cycle dynamics of virtual states with attosecond transient absorption
Author :
Chini, Michael ; Xiaowei Wang ; Yan Cheng ; Yi Wu ; Di Zhao ; Telnov, Dmitry A. ; Shih-I Chu ; Zenghu Chang
Author_Institution :
CREOL & Dept. of Phys., Univ. of Central Florida, Orlando, FL, USA
Abstract :
Isolated attosecond pulses with continuum spectra extending below 15 eV are used to probe the sub-cycle energy shifts and splitting of helium excited states. Additionally, new absorption features appear far from the 1snp absorption lines.
Keywords :
excited states; helium; high-speed optical techniques; measurement by laser beam; spectral line shift; 1snp absorption lines; He; absorption features; attosecond transient absorption; continuum spectra; helium excited state splitting; isolated attosecond pulses; sub-cycle dynamics; sub-cycle energy shifts; virtual states; Absorption; Energy states; Helium; Laser excitation; Photonics; Physics; Transient analysis;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
