Ground- and Excited-State Vibrational Coherence Dynamics in Bacteriorhodopsin Probed With Degenerate Four-Wave-Mixing Experiments

ChemPhysChem ◽  
2011 ◽  
Vol 12 (10) ◽  
pp. 1851-1859 ◽  
Author(s):  
Jan Philip Kraack ◽  
Tiago Buckup ◽  
Norbert Hampp ◽  
Marcus Motzkus
Keyword(s):  
Excited State ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Vibrational Coherence ◽  
Degenerate Four Wave Mixing

Degenerate four-wave mixing based on excited-state absorption in azo-dye-doped polymer films

1996 ◽  
Vol 62 (3) ◽  
pp. 299-302 ◽  
Author(s):  
H. Fei ◽  
Y. Yang ◽  
Z. Wei ◽  
L. Han ◽  
Y. Che ◽  
...  
Keyword(s):  
Excited State ◽  
Polymer Films ◽  
Azo Dye ◽  
Excited State Absorption ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Degenerate Four Wave Mixing ◽  
Doped Polymer

Excited state dynamics in phthalocyanines studied using degenerate four wave mixing with incoherent light

2002 ◽  
Vol 06 (03) ◽  
pp. 233-237 ◽  
Author(s):  
S. Venugopal Rao ◽  
D. Narayana Rao
Keyword(s):  
Excited State ◽  
Relaxation Times ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Phase Relaxation ◽  
Incoherent Light ◽  
Phase Conjugate ◽  
Excited State Dynamics ◽  
Degenerate Four Wave Mixing ◽  
Population Relaxation

We present our experimental results on the measurements of excited state dynamics in phthalocyanines ( Pc , CuPc , FePc , and ZnPc ) using degenerate four wave mixing with incoherent light (DFWM-IL). Three different timescales were observed, for all samples, in the phase conjugate signal recorded as a function of delay in probe beam in the standard backward geometry. The fastest component (< 170 fs) is associated to the phase relaxation in the S n states and the slowest components (∼3-5 ps and 35-55 ps) to the vibration and population relaxation times from the S1 state. The present results are compared with those obtained with shorter pulses and various techniques for similar molecules. The consequences of such short lifetimes are also discussed in view of the strong optical limiting properties of these molecules.

Enhancement and Suppression of Vibrational Coherence in Degenerate Four-Wave-Mixing Signal Generated from Dye-Doped Polymer Films

2005 ◽  
Vol 109 (24) ◽  
pp. 11946-11952 ◽  
Author(s):  
Yutaka Nagasawa ◽  
Yoshio Mori ◽  
Yukako Nakagawa ◽  
Hiroshi Miyasaka ◽  
Tadashi Okada
Keyword(s):  
Polymer Films ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Vibrational Coherence ◽  
Degenerate Four Wave Mixing ◽  
Doped Polymer
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