Intrinsic and nonlocal Gilbert damping parameter in all optical pump-probe experiments

2006 ◽  
Vol 99 (8) ◽  
pp. 08F308 ◽  
Author(s):  
Marija Djordjevic ◽  
Gerrit Eilers ◽  
Anne Parge ◽  
Markus Münzenberg ◽  
J. S. Moodera
Keyword(s):  
Optical Pump ◽  
Gilbert Damping ◽  
Pump Probe ◽  
Damping Parameter ◽  
All Optical

Gilbert Damping for Various Ni80Fe20Thin Films Investigated Using All-Optical Pump–Probe Detection and Ferromagnetic Resonance

2008 ◽  
Vol 1 ◽  
pp. 121301 ◽  
Author(s):  
Shigemi Mizukami ◽  
Hiroyuki Abe ◽  
Daisuke Watanabe ◽  
Mikihiko Oogane ◽  
Yasuo Ando ◽  
...  
Keyword(s):  
Ferromagnetic Resonance ◽  
Optical Pump ◽  
Gilbert Damping ◽  
Pump Probe ◽  
Probe Detection ◽  
All Optical

Gilbert damping in perpendicularly magnetized Pt/Co/Pt films investigated by all-optical pump-probe technique

2010 ◽  
Vol 96 (15) ◽  
pp. 152502 ◽  
Author(s):  
S. Mizukami ◽  
E. P. Sajitha ◽  
D. Watanabe ◽  
F. Wu ◽  
T. Miyazaki ◽  
...  
Keyword(s):  
Optical Pump ◽  
Gilbert Damping ◽  
Pump Probe ◽  
Probe Technique ◽  
All Optical ◽  
Pt Films

Probing nonlinear magnetization dynamics in Fe/MgO(001) film by all optical pump-probe technique

2014 ◽  
Vol 104 (14) ◽  
pp. 142405 ◽  
Author(s):  
Wei He ◽  
Bo Hu ◽  
Qing-Feng Zhan ◽  
Xiang-Qun Zhang ◽  
Zhao-Hua Cheng
Keyword(s):  
Magnetization Dynamics ◽  
Optical Pump ◽  
Pump Probe ◽  
Probe Technique ◽  
All Optical ◽  
Nonlinear Magnetization

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.

scholarly journals Эпитаксиальные напряжения в фотопроводящем слое InGaAs для THz-антенн

2017 ◽  
Vol 43 (22) ◽  
pp. 48
Author(s):  
Д.И Хусяинов ◽  
А.М. Буряков ◽  
В.Р. Билык ◽  
Е.Д. Мишина ◽  
Д.С. Пономарев ◽  
...  
Keyword(s):  
Optical Pump ◽  
Pump Probe

Методами оптического зондирования при фемтосекундной лазерной накачке (optical pump-probe) и терагерцевой спектроскопии во временной области исследовано влияние эпитаксиальных напряжений на динамику неравновесных носителей заряда, а также спектр терагерцевого излучения в пленках InyGa1-yAs. Продемонстрировано снижение времени жизни неравновесных носителей заряда и увеличение ширины спектра терагерцевого излучения для пленки InyGa1-yAs с большим механическим напряжением. DOI: 10.21883/PJTF.2017.22.45260.16958

Thermal Transport From Gold Nanorod to Solvent, an Investigation of Ligand Effects by Ultrafast Laser Spectroscopy

2008 ◽  
Author(s):  
Joshua Alper ◽  
Aaron Schmidt ◽  
Kimberly Hamad-Schifferli
Keyword(s):  
Heat Transfer ◽  
Thermal Properties ◽  
Gold Nanorods ◽  
Thermal Transport ◽  
Ultrafast Laser ◽  
Ultrafast Laser Spectroscopy ◽  
Optical Pump ◽  
Thermal Interface ◽  
Pump Probe ◽  
Ligand Effects

To facilitate analysis of nanoscale heat transfer in nanoparticle systems the thermal properties of ligand layers must be understood. To this end, we use an optical pump-probe technique to study the thermal transport across ligands on gold nanorods and into the solvent. We find that varying properties of the ligand can have large impacts on the thermal decay of a nanorod after exposure to a laser pulse. By raising the concentration of free CTAB from 1 mM and 10 mM in solutions, the CTAB layer’s effective thermal interface conductance increases three fold. The transition occurs near the CTAB critical micelle concentration. Similar results are found for other ligand layers.

scholarly journals All-optical study of tunable ultrafast spin dynamics in [Co/Pd]/NiFe systems: the role of spin-twist structure on Gilbert damping

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 80168-80173 ◽  
Author(s):  
Chandrima Banerjee ◽  
Semanti Pal ◽  
Martina Ahlberg ◽  
T. N. Anh Nguyen ◽  
Johan Åkerman ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Optical Study ◽  
Gilbert Damping ◽  
Spin Configuration ◽  
Exchange Spring ◽  
Static Spin ◽  
All Optical ◽  
Magnetization Precession ◽  
Twist Structure

The competing magnetic anisotropies and the interfacial properties are found to control the static spin configuration and ultrafast demagnetization, magnetization precession and damping in [Co/Pd]/NiFe(t) exchange spring samples.

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