Two-color pump-probe laser spectroscopy instrument with picosecond time-resolved electronic delay and extended scan range

2005 ◽  
Vol 76 (11) ◽  
pp. 114301 ◽  
Author(s):  
Anchi Yu ◽  
Xiong Ye ◽  
Dan Ionascu ◽  
Wenxiang Cao ◽  
Paul M. Champion
Keyword(s):  
Laser Spectroscopy ◽  
Probe Laser ◽  
Time Resolved ◽  
Pump Probe

On the Doppler averaging of susceptibility in pump-probe laser spectroscopy

2015 ◽  
Vol 22 (4) ◽  
pp. 521-525 ◽  
Author(s):  
Gyeong-Won Choi ◽  
Heung-Ryoul Noh
Keyword(s):  
Laser Spectroscopy ◽  
Probe Laser ◽  
Pump Probe

Rotational assignments in the S1 (1B3u) state of pyrazine by UV – UV pump-probe laser spectroscopy

1991 ◽  
Vol 177 (4-5) ◽  
pp. 357-360 ◽  
Author(s):  
Paul Uijt de Haag ◽  
Johannes Heinze ◽  
W. Leo Meerts
Keyword(s):  
Laser Spectroscopy ◽  
Probe Laser ◽  
Pump Probe

scholarly journals Picosecond Acoustics Technique to Measure the Sound Velocities of Fe-Si Alloys and Si Single-Crystals at High Pressure

Minerals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 214 ◽  
Author(s):  
Eric Edmund ◽  
Michel Gauthier ◽  
Daniele Antonangeli ◽  
Simon Ayrinhac ◽  
Silvia Boccato ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Acoustic Properties ◽  
Probe Laser ◽  
Laser Technique ◽  
Time Resolved ◽  
Pump Probe ◽  
Longitudinal Sound Velocity ◽  
Diamond Anvil ◽  
Complete Set

We describe here a time resolved pump-probe laser technique—picosecond interferometry—which has been combined with diamond anvil cells (DAC). This method enables the measurement of the longitudinal sound velocity up to Mbar pressure for any kind of material (solids, liquids, metals, insulators). We also provide a description of picosecond acoustics data analysis in order to determine the complete set of elastic constants for single crystals. To illustrate such capabilities, results are given on the pressure dependence of the acoustic properties for prototypical cases: polycrystal (hcp-Fe-5 wt% Si up to 115 GPa) and single-crystal (Si up to 10 GPa).

scholarly journals Effect of Dehydrated Trehalose Matrix on the Kinetics of Forward Electron Transfer Reactions in Photosystem I

2017 ◽  
Vol 231 (2) ◽  
Author(s):  
Ivan Shelaev ◽  
Michael Gorka ◽  
Anton Savitsky ◽  
Vasily Kurashov ◽  
Mahir Mamedov ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photosystem I ◽  
Time Domain ◽  
Probe Laser ◽  
Glassy Matrix ◽  
Back Reaction ◽  
Time Resolved ◽  
Pump Probe ◽  
Kinetics Of ◽  
Subnanosecond Time

AbstractThe effect of dehydration on the kinetics of forward electron transfer (ET) has been studied in cyanobacterial photosystem I (PS I) complexes in a trehalose glassy matrix by time-resolved optical and EPR spectroscopies in the 100 fs to 1 ms time domain. The kinetics of the flash-induced absorption changes in the subnanosecond time domain due to primary and secondary charge separation steps were monitored by pump–probe laser spectroscopy with 20-fs low-energy pump pulses centered at 720 nm. The back-reaction kinetics of P

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.

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