Femtosecond Pump-Probe, Single-Particle Spectroscopic Study on Excited-State Migration Dynamics of Copper Hexadecafluorophthalocyanine Nanorods

AbstractWe introduce a novel instrument combining femtosecond pump-probe spectroscopy and confocal microscopy for spatio-temporal imaging of excited-state dynamics of phase-separated polymer blends. Phenomena occurring at interfaces between different materials are crucial for optimizing the device performances, but are poorly understood due to the variety of possible electronic states and processes involved and to their complicated dynamics. Our instrument (with 200-fs temporal resolution and 300-nm spatial resolution) provides new insights into the properties of polymer blends, revealing spatially variable photo-relaxation paths and dynamics and highlighting a peculiar behaviour at the interface between the phase-separated domains.

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Ultrafast dynamics in the excited state of green fluorescent protein (wt) studied by frequency-resolved femtosecond pump-probe spectroscopy

Physical Chemistry Chemical Physics ◽

10.1039/b108843b ◽

2002 ◽

Vol 4 (6) ◽

pp. 1072-1081 ◽

Cited By ~ 53

Author(s):

Kathrin Winkler ◽

Jörg Lindner ◽

Vinod Subramaniam ◽

Thomas M. Jovin ◽

Peter Vöhringer

Keyword(s):

Excited State ◽

Green Fluorescent Protein ◽

Fluorescent Protein ◽

Ultrafast Dynamics ◽

Pump Probe ◽

Green Fluorescent ◽

Probe Spectroscopy

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INTERBAND TWO-PHOTON TRANSITION IN MOTT INSULATOR AS A NEW MECHANISM FOR ULTRAFAST OPTICAL NONLINEARITY

International Journal of Modern Physics B ◽

10.1142/s0217979201008305 ◽

2001 ◽

Vol 15 (28n30) ◽

pp. 3628-3632 ◽

Cited By ~ 4

Author(s):

M. Ashida ◽

T. Ogasawara ◽

N. Motoyama ◽

H. Eisaki ◽

S. Uchida ◽

...

Keyword(s):

Excited State ◽

Optical Switching ◽

Near Infrared ◽

Optical Nonlinearity ◽

Infrared Region ◽

Pump Probe ◽

Two Photon ◽

Ultrafast Optical ◽

Order Of Magnitude ◽

Probe Transmission

The dimensionality dependence of optical nonlinearity in cuprates was investigated by sub-picosecond pump-probe transmission measurements in the near-infrared region. It was found that cuprates with one-dimensional Cu-O networks show nonlinearity one order of magnitude larger than that of conventional band semiconductors and picosecond relaxation of the excited state. In contrast, a two-dimensional cuprate shows one order of magnitude smaller nonlinearity and slower decay of the excited state, as well as picosecond relaxation. The possibility for application of the present material to all-optical switching devices is also discussed.

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Pump-probe experiments of the excited state dynamics of GR1 centers in diamond

10.1364/cleo_si.2021.sm1q.3 ◽

2021 ◽

Author(s):

Shova D. Subedi ◽

Vladimir V. Fedorov ◽

Sergey B. Mirov ◽

Matthew Markham

Keyword(s):

Excited State ◽

Pump Probe ◽

Excited State Dynamics

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Excited State Absorption in Pr3+ Doped Fluorozirconate Glass

MRS Proceedings ◽

10.1557/proc-244-169 ◽

1991 ◽

Vol 244 ◽

Cited By ~ 1

Author(s):

R. S. Quimby ◽

B. Zheng

Keyword(s):

Excited State ◽

Excited State Absorption ◽

Fiber Amplifier ◽

Pump Probe ◽

Probe Technique ◽

Zblan Glass ◽

Fluorozirconate Glass ◽

A New Technique ◽

Doped Glass ◽

Good Agreement

ABSTRACTThe excited state absorption (ESA) spectrum for Pr3+ doped ZBLAN glass is determined using a new technique based on the McCumber theory [D.E. McCumber, Phys. Rev. 136, A954 (1964)]. ESA peaks at 1380 and 840 nm are found, corresponding to transitions from the 1G4 to the 1D2 and 1I6 levels, respectively. ESA at the fiber amplifier pump wavelength 1.017 μm is found to be very small. The new method is also applied to Er+ doped glass, and good agreement is obtained between the resulting ESA spectrum and previous measurements using a traditional pump-probe technique.

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