Title :
Creation of optical gain and absorption via a virtual single-photon transition
Author :
Herrmann, J. ; Weger, M. ; Locher, R. ; Sabbar, M. ; Riviere, P. ; Saalmann, U. ; Rost, J.-M. ; Gallmann, L. ; Keller, Ulrich
Author_Institution :
Dept. of Phys., ETH Zurich, Zürich, Switzerland
Abstract :
We present the creation and control of optical gain by interrupting the temporal evolution of the dipole response of a quantum-mechanical two-level system. Our theoretical analysis is verified by transient absorption spectroscopy in helium.
Keywords :
helium; quantum theory; ultraviolet spectra; ultraviolet spectroscopy; visible spectra; visible spectroscopy; He; dipole response; optical gain; quantum-mechanical two-level system; temporal evolution; transient absorption spectroscopy; virtual single-photon transition; Absorption; Delays; Electromagnetic fields; Helium; Optical pulses; Photonics; Transient analysis;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
