scholarly journals Femtosecond pump-probe spectroscopy of propagating coherent acoustic phonons inInxGa1−xN∕GaNheterostructures

2005 ◽  
Vol 72 (19) ◽  
Author(s):  
Rongliang Liu ◽  
G. D. Sanders ◽  
C. J. Stanton ◽  
Chang Sub Kim ◽  
J. S. Yahng ◽  
...  
Keyword(s):  
Acoustic Phonons ◽  
Pump Probe ◽  
Probe Spectroscopy ◽  
Coherent Acoustic Phonons

scholarly journals Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy

2012 ◽  
Vol 112 (3) ◽  
pp. 033517 ◽  
Author(s):  
Axel Bruchhausen ◽  
James Lloyd-Hughes ◽  
Mike Hettich ◽  
Raphael Gebs ◽  
Martin Grossmann ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Acoustic Phonons ◽  
Pump Probe ◽  
Quantum Cascade ◽  
Probe Spectroscopy ◽  
Coherent Acoustic Phonons

Observation of coherent folded acoustic phonons propagating in a GaAs/AlAs superlattice by two-color pump-probe spectroscopy

1999 ◽  
Vol 60 (11) ◽  
pp. 8262-8266 ◽  
Author(s):  
K. Mizoguchi ◽  
M. Hase ◽  
S. Nakashima ◽  
M. Nakayama
Keyword(s):  
Acoustic Phonons ◽  
Pump Probe ◽  
Probe Spectroscopy

scholarly journals Hot carrier cooling by acoustic phonons in epitaxial graphene by ultrafast pump-probe spectroscopy

2011 ◽  
Vol 8 (4) ◽  
pp. 1194-1197 ◽  
Author(s):  
Dong Sun ◽  
Charles Divin ◽  
Claire Berger ◽  
Walt A. de Heer ◽  
Phillip N. First ◽  
...  
Keyword(s):  
Epitaxial Graphene ◽  
Acoustic Phonons ◽  
Pump Probe ◽  
Hot Carrier ◽  
Probe Spectroscopy

scholarly journals Ultrafast Electron/Energy Transfer and Intersystem Crossing Mechanisms in BODIPY-Porphyrin Compounds

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 312
Author(s):  
Yusuf Tutel ◽  
Gökhan Sevinç ◽  
Betül Küçüköz ◽  
Elif Akhuseyin Yildiz ◽  
Ahmet Karatay ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Spectra ◽  
Visible Region ◽  
Energy Transfer Mechanism ◽  
Free Base ◽  
Pump Probe ◽  
Harvesting Efficiency ◽  
Probe Spectroscopy ◽  
Absorption Features ◽  
Transfer Mechanisms

Meso-substituted borondipyrromethene (BODIPY)-porphyrin compounds that include free base porphyrin with two different numbers of BODIPY groups (BDP-TTP and 3BDP-TTP) were designed and synthesized to analyze intramolecular energy transfer mechanisms of meso-substituted BODIPY-porphyrin dyads and the effect of the different numbers of BODIPY groups connected to free-base porphyrin on the energy transfer mechanism. Absorption spectra of BODIPY-porphyrin conjugates showed wide absorption features in the visible region, and that is highly valuable to increase light-harvesting efficiency. Fluorescence spectra of the studied compounds proved that BODIPY emission intensity decreased upon the photoexcitation of the BODIPY core, due to the energy transfer from BODIPY unit to porphyrin. In addition, ultrafast pump-probe spectroscopy measurements indicated that the energy transfer of the 3BDP-TTP compound (about 3 ps) is faster than the BDP-TTP compound (about 22 ps). Since the BODIPY core directly binds to the porphyrin unit, rapid energy transfer was seen for both compounds. Thus, the energy transfer rate increased with an increasing number of BODIPY moiety connected to free-base porphyrin.

scholarly journals Temporal superoscillations of subterahertz coherent acoustic phonons

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
S. Brehm ◽  
A. V. Akimov ◽  
R. P. Campion ◽  
A. J. Kent
Keyword(s):  
Acoustic Phonons ◽  
Coherent Acoustic Phonons

Classical theory of ultrafast pump-probe spectroscopy: Applications to I2 photodissociation in Ar solution

1994 ◽  
Vol 61 (1-3) ◽  
pp. 153-165 ◽  
Author(s):  
Robert M. Whitnell ◽  
Kent R. Wilson ◽  
YiJing Yan ◽  
Ahmed H. Zewail
Keyword(s):  
Classical Theory ◽  
Pump Probe ◽  
Probe Spectroscopy

Coherent pump–probe spectroscopy of a Λ system with a close lying excited level

2013 ◽  
Vol 88 (6) ◽  
pp. 065404 ◽  
Author(s):  
Niharika Singh ◽  
Ayan Ray ◽  
R D'Souza ◽  
Q V Lawande ◽  
B N Jagatap
Keyword(s):  
Excited Level ◽  
Pump Probe ◽  
Probe Spectroscopy

Ultrafast pump-probe spectroscopy of native etiolated oat phytochrome

Biochemistry ◽  
1993 ◽  
Vol 32 (29) ◽  
pp. 7512-7518 ◽  
Author(s):  
Sergei Savikhin ◽  
Todd Wells ◽  
Pill Soon Song ◽  
Walter S. Struve
Keyword(s):  
Pump Probe ◽  
Probe Spectroscopy
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