Incoherent time-resolved pump-probe Raman spectroscopy

1993 ◽  
Vol 97 (39) ◽  
pp. 9871-9873 ◽  
Author(s):  
Hiromi Okamoto ◽  
Takakazu Nakabayashi ◽  
Mitsuo Tasumi
Keyword(s):  
Raman Spectroscopy ◽  
Time Resolved ◽  
Pump Probe

scholarly journals Picosecond Raman Investigation of the Structure and Reactivity of 4,4′-Bipyridine in the S1 State

1999 ◽  
Vol 19 (1-4) ◽  
pp. 353-356
Author(s):  
G. Buntinx ◽  
L. Bussotti ◽  
V. De Waele ◽  
C. Didierjean ◽  
O. Poizat
Keyword(s):  
Raman Spectroscopy ◽  
Time Domain ◽  
Electronic Excitation ◽  
Singlet State ◽  
Resonance Raman Spectroscopy ◽  
Excited Singlet State ◽  
Excited Singlet ◽  
Time Resolved ◽  
Pump Probe ◽  
Spectroscopic Evidence

The lowest excited singlet state (S1) of 4,4′-bipyridine (44BPY) has been studied in water and methanol by using pump-probe time-resolved resonance Raman spectroscopy in the picosecond time domain. Spectroscopic evidence for a disymmetric S1 structure with localization of the electronic excitation in one of the two pyridyl rings is given. The fast formation of the N-hydro radical 44BPYH• from the S1 state is clearly observed in methanol.

PHOTODARKENING ENERGY STATE IN NANOCRYSTALLINE CdSxSe1−x-DOPED GLASS PROBED BY TIME-RESOLVED RAMAN SPECTROSCOPY

1996 ◽  
Vol 03 (01) ◽  
pp. 1101-1104 ◽  
Author(s):  
XIAOJIE ZHANG ◽  
HIRO-O HAMAGUCHI
Keyword(s):  
Raman Spectroscopy ◽  
Energy State ◽  
Intensity Change ◽  
Time Resolved ◽  
Pump Probe ◽  
Glass Color ◽  
Doped Glasses ◽  
Commercial Glass ◽  
Raman Intensities ◽  
Doped Glass

We studied the photodarkening effect in nanocrystalline CdS x Se1−x-doped glasses by pump-probe time-resolved Raman spectroscopy. A marked decrease in the phonon Raman intensities was observed when the photodarkened samples (commercial glass color filters) were pre-excited by the pump pulse. Such an intensity change was not observed for the fresh (unphotodarkened) samples. These findings have been interpreted in terms of a new photodarkening-induced state that traps the photoexcited electrons efficiently. The magnitude of the decrease in Raman intensities increased linearly with increasing selenium fraction, suggesting that the photodarkening energy state is related to the Se anion or corresponding vacancy on the surface of CdS x Se 1−x microcrystallites.

Time-resolved pump-probe Raman spectroscopy with temporally incoherent light

1994 ◽  
Vol 25 (7-8) ◽  
pp. 631-639 ◽  
Author(s):  
Hiromi Okamoto ◽  
Takakazu Nakabayashi ◽  
Mitsuo Tasumi
Keyword(s):  
Raman Spectroscopy ◽  
Incoherent Light ◽  
Time Resolved ◽  
Pump Probe

Rotational Raman spectroscopy of ethylene using a femtosecond time-resolved pump-probe technique

2005 ◽  
Vol 123 (15) ◽  
pp. 154309 ◽  
Author(s):  
A. Rouzée ◽  
V. Boudon ◽  
B. Lavorel ◽  
O. Faucher ◽  
W. Raballand
Keyword(s):  
Raman Spectroscopy ◽  
Time Resolved ◽  
Pump Probe ◽  
Probe Technique

Time-resolved coherent Raman spectroscopy by high-speed pump-probe delay scanning

2014 ◽  
Vol 39 (14) ◽  
pp. 4124 ◽  
Author(s):  
S. R. Domingue ◽  
D. G. Winters ◽  
R. A. Bartels
Keyword(s):  
Raman Spectroscopy ◽  
High Speed ◽  
Time Resolved ◽  
Pump Probe ◽  
Probe Delay ◽  
Coherent Raman

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.

Time-resolved stand-off UV-Raman spectroscopy for planetary exploration

2014 ◽  
Vol 92 ◽  
pp. 88-100 ◽  
Author(s):  
M. Skulinova ◽  
C. Lefebvre ◽  
P. Sobron ◽  
E. Eshelman ◽  
M. Daly ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Planetary Exploration ◽  
Time Resolved ◽  
Uv Raman Spectroscopy ◽  
Uv Raman

Investigation on nonlinear dynamics of ZnO using time-resolved pump-probe technique with phase object

2011 ◽  
Author(s):  
Lirong Ge ◽  
Min Shui ◽  
Xiao Jin ◽  
Zhongguo Li ◽  
Yinglin Song
Keyword(s):  
Nonlinear Dynamics ◽  
Phase Object ◽  
Time Resolved ◽  
Pump Probe ◽  
Probe Technique
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