Title :
First hyperpolarizability of molecules excited by optical pump
Author :
Petmv, D.V. ; Faustina, W.M.
Author_Institution :
Inst. of Photonics Sci., Barcelona, Spain
Abstract :
Usually hyperpolarizabilities are studied for molecules in their ground state. However the real population of the initial state for the virtual electronic excitations induced by incident light can include not only the ground state but also excited states populated owing to an external source. We report results of numerical calculations and experimental study of the first hyperpolarizability β(-2ω;ω,ω) in pora-nitroaniline (PNA) with excited states obtained by optical pump.
Keywords :
excited states; ground states; optical pumping; organic compounds; excited states; ground state; hyperpolarizability; optical pump; pora-nitroaniline; virtual electronic excitations; Fluorescence; Laser excitation; Luminescence; Nonlinear optics; Optical pumping; Presence network agents; Pulse measurements; Pump lasers; Stationary state; Time measurement;
Conference_Titel :
Quantum Electronics Conference, 2003. EQEC '03. European
Print_ISBN :
0-7803-7733-8
DOI :
10.1109/EQEC.2003.1313915
