Multiple modulation for optical pump‐probe spectroscopy

1982 ◽  
Vol 53 (5) ◽  
pp. 706-707 ◽  
Author(s):  
Philippe Bado ◽  
Scott B. Wilson ◽  
Kent R. Wilson
Keyword(s):  
Optical Pump ◽  
Pump Probe ◽  
Probe Spectroscopy

Ultrafast dynamics in pentacene and tetracene probed using optical pump-probe spectroscopy

2004 ◽  
Author(s):  
Verner K. Thorsmølle ◽  
R D. Averitt ◽  
J Demsar ◽  
X Chi ◽  
S Tretiak ◽  
...  
Keyword(s):  
Ultrafast Dynamics ◽  
Optical Pump ◽  
Pump Probe ◽  
Probe Spectroscopy

scholarly journals Holography and thermalization in optical pump-probe spectroscopy

2018 ◽  
Vol 97 (8) ◽  
Author(s):  
A. Bagrov ◽  
B. Craps ◽  
F. Galli ◽  
V. Keränen ◽  
E. Keski-Vakkuri ◽  
...  
Keyword(s):  
Optical Pump ◽  
Pump Probe ◽  
Probe Spectroscopy

scholarly journals Nonequilibrium Carrier Dynamics Studied in Underdoped Bi2212 by Polarized Optical Pump-Probe Spectroscopy

2009 ◽  
Vol 23 (5) ◽  
pp. 871-872
Author(s):  
Y. Toda ◽  
J. Sekiya ◽  
Y. H. Liu ◽  
N. Momono ◽  
M. Oda ◽  
...  
Keyword(s):  
Carrier Dynamics ◽  
Nonequilibrium Carrier ◽  
Optical Pump ◽  
Pump Probe ◽  
Probe Spectroscopy

scholarly journals Understanding Multiferroic Hexagonal Manganites by Static and Ultrafast Optical Spectroscopy

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Yu Ting Wang ◽  
Chih Wei Luo ◽  
Takayoshi Kobayashi
Keyword(s):  
Electronic Structure ◽  
Magnetic Ordering ◽  
Optical Pump ◽  
Pump Probe ◽  
Spin Lattice ◽  
Ultrafast Optical ◽  
Ultrafast Optical Spectroscopy ◽  
Hexagonal Manganites ◽  
Spin Charge Coupling ◽  
Probe Spectroscopy

Multiferroic hexagonal manganites ReMnO3studied by optics are reviewed. Their electronic structures were revealed by static linear and nonlinear spectra. Two transitions located at~1.7 eV and~2.3 eV have been observed and attributed to the interband transitions from the lower-lying Mn3+dxy/dx2-y2anddxz/dyzstates to the Mn3+d3z2-r2state, respectively. These so-called d-d transitions exhibit a blueshift as decreasing temperatures and an extra blueshift nearTN. This dramatic change indicates that the magnetic ordering seriously influences the electronic structure. On the other hand, the ultrafast optical pump-probe spectroscopy has provided the important information on spin-charge coupling and spin-lattice coupling. Because of the strongly correlation between electronic structure and magnetic ordering, the amplitude of the initial rising component inΔR/Rshows striking changes at the vicinity ofTN. Moreover, the coherent optical and acoustic phonons were observed on optical pump-probe spectroscopy. Both the amplitude and dephasing time of coherent phonons also exhibit significant changes atTN, which provide the evidence for spin-lattice interaction in these intriguing materials.

One-Photon and Two-Photon Pump-Probe Spectroscopy of Photoactive Yellow Protein

1997 ◽  
Vol 06 (03) ◽  
pp. 295-304
Author(s):  
O. Lyngnes ◽  
H. M. Gibbs ◽  
C. F. Li ◽  
S. B. Devanathan ◽  
T. E. Meyer ◽  
...  
Keyword(s):  
Argon Laser ◽  
Absorption Peak ◽  
Photon Absorption ◽  
Photoactive Yellow Protein ◽  
Optical Pump ◽  
Pump Probe ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photon Excitation ◽  
Probe Spectroscopy

We present the results of nonlinear optical pump-probe experiments on photoactive yellow protein (PYP). We are able to completely bleach the 446 nm absorption peak of PYP by one-photon excitation using a cw argon laser. We calculate the corresponding index change and find it to be similar to that of bacteriorhodopsin. We also determine an upper limit to the two photon absorption cross-section of PYP by looking for bleaching of the 446 nm absorption peak under irradiation by femtosecond pulses at 820–910 nm. No TPA signal is observed.

scholarly journals Measurement of Ultrafast Carrier Dynamics in Epitaxial Graphene

2008 ◽  
Vol 1081 ◽  
Author(s):  
Jahan M. Dawlaty ◽  
Shriram Shivaraman ◽  
Mvs Chandrashekhar ◽  
Michael G. Spencer ◽  
Farhan Rana
Keyword(s):  
Relaxation Times ◽  
Epitaxial Graphene ◽  
Optical Pump ◽  
Carrier Relaxation ◽  
Pump Probe ◽  
Graphene Layers ◽  
Ultrafast Optical ◽  
Interband Scattering ◽  
Ultrafast Carrier ◽  
Probe Spectroscopy

ABSTRACTUsing ultrafast optical pump-probe spectroscopy, we have measured carrier relaxation times in epitaxial graphene layers grown on SiC wafers. We find two distinct time scales associated with the relaxation of nonequilibrium photogenerated carriers. An initial fast relaxation transient in the 70-120 fs range is followed by a slower relaxation process in the 0.4-1.7 ps range. The slower relaxation time is found to be inversely proportional to the degree of crystalline disorder in the graphene layers as measured by Raman spectroscopy. We relate the measured fast and slow time constants to carrier-carrier and carrier-phonon intraband and interband scattering processes in graphene.

scholarly journals Measurement of ultrafast dynamics of photoexcited carriers inβ-Ga2O3by two-color optical pump-probe spectroscopy

2018 ◽  
Vol 113 (25) ◽  
pp. 252102 ◽  
Author(s):  
Okan Koksal ◽  
Nicholas Tanen ◽  
Debdeep Jena ◽  
Huili (Grace) Xing ◽  
Farhan Rana
Keyword(s):  
Ultrafast Dynamics ◽  
Optical Pump ◽  
Pump Probe ◽  
Probe Spectroscopy
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