Photoinduced large amplitude motion as mechanism for pure electronic dephasing and its manifestation in continuous‐wave and time‐resolved spectroscopy

1994 ◽  
Vol 101 (1) ◽  
pp. 246-254 ◽  
Author(s):  
Gerhard Stock
Keyword(s):  
Large Amplitude ◽  
Continuous Wave ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Electronic Dephasing ◽  
Large Amplitude Motion

Continuous wave and time resolved spectroscopy of InAsN/GaAsN based quantum dots

2005 ◽  
Vol 202 (14) ◽  
pp. 2598-2603 ◽  
Author(s):  
T. Taliercio ◽  
P. Valvin ◽  
R. Intartaglia ◽  
V. Sallet ◽  
J. C. Harmand ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Continuous Wave ◽  
Time Resolved ◽  
Time Resolved Spectroscopy

Pump-Probe Measurements Using Silicon Nanocrystal Waveguides

2003 ◽  
Vol 770 ◽  
Author(s):  
Nathanael Smith ◽  
Max J. Lederer ◽  
Marek Samoc ◽  
Barry Luther-Davies ◽  
Robert G. Elliman
Keyword(s):  
Probe Beam ◽  
Time Resolution ◽  
Pump Beam ◽  
Silicon Nanocrystals ◽  
Continuous Wave ◽  
Optical Gain ◽  
Optical Pump ◽  
Time Resolved ◽  
Pump Probe ◽  
Probe Measurements

AbstractOptical pump-probe measurements were performed on planar slab waveguides containing silicon nanocrystals in an attempt to measure optical gain from photo-excited silicon nanocrystals. Two experiments were performed, one with a continuous-wave probe beam and a pulsed pump beam, giving a time resolution of approximately 25 ns, and the other with a pulsed pump and probe beam, giving a time resolution of approximately 10 ps. In both cases the intensity of the probe beam was found to be attenuated by the pump beam, with the attenuation increasing monotonically with increasing pump power. Time-resolved measurements using the first experimental arrangement showed that the probe signal recovered its initial intensity on a time scale of 45-70 μs, a value comparable to the exciton lifetime in Si nanocrystals. These data are shown to be consistent with an induced absorption process such as confined carrier absorption. No evidence for optical gain was observed.

scholarly journals Photophysical properties and fluorosolvatochromism of D–π–A thiophene based derivatives

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43459-43471
Author(s):  
Hussain A. Z. Sabek ◽  
Ahmed M. M. Alazaly ◽  
Dina Salah ◽  
Hesham S. Abdel-Samad ◽  
Mohamed A. Ismail ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Fluorescence Emission ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Solvation Models

Solvation-dependent photophysical properties of two push–pull thiophene-based compounds with donor–π–acceptor (D–π–A) structures were investigated using absorption, fluorescence emission and time resolved spectroscopy, and supported by different solvation models.

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