Generation of tunable picosecond pulses in the vibrational infrared by stimulated electronic Raman scattering of rhodamine-dye-laser pulses from the 6s–5d cesium transition

1984 ◽  
Vol 9 (2) ◽  
pp. 50 ◽  
Author(s):  
M. Berg ◽  
A. L. Harris ◽  
J. K. Brown ◽  
C. B. Harris
Keyword(s):  
Raman Scattering ◽  
Laser Pulses ◽  
Dye Laser ◽  
Picosecond Pulses ◽  
Electronic Raman Scattering ◽  
Rhodamine Dye

Quantitative Raman Scattering from Acceptors in GaAs

1987 ◽  
Vol 104 ◽  
Author(s):  
T. D. Harrisz ◽  
M. G. Lamont ◽  
L. Seibles
Keyword(s):  
Raman Scattering ◽  
Laser Power ◽  
Laser Wavelength ◽  
Dye Laser ◽  
Local Mode ◽  
Tunable Dye Laser ◽  
Electronic Raman Scattering ◽  
Ccd Detector ◽  
Cooled Ccd ◽  
Carbon Concentrations

ABSTRACTRecent reports have demonstrated the possibility of probing acceptor concentrations in bulk semi-insulating GaAs by electronic Raman scattering using 1.06 μm radiation.1 The inefficiency of detectors in this spectral region severely limits sensitivity, precluding extension to epitaxial layers. We will discuss an approach using both 1.06 μm radiation to photo-neutralize acceptors, and a tunable dye laser to excite Raman scattering. Using a cooled CCD detector, an improvement in detection limit of 104 is realized. Comparison of Raman signals with infrared local mode measurements for samples with carbon concentrations from 1×1014 to 4×1015 cm-3 will be reported. The effect of 1.06 μm power density, dye laser wavelength, dye laser power, and sample fluorescence are included.

scholarly journals Electronic Raman Scattering in Suspended Semiconducting Carbon Nanotube

2020 ◽  
Vol 11 (24) ◽  
pp. 10497-10503
Author(s):  
Yuecong Hu ◽  
Shaochuang Chen ◽  
Xin Cong ◽  
Sida Sun ◽  
Jiang-bin Wu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Raman Scattering ◽  
Electronic Raman Scattering

scholarly journals Analytical model for the depth progress of percussion drilling with ultrashort laser pulses

2021 ◽  
Vol 127 (5) ◽  
Author(s):  
Daniel Holder ◽  
Rudolf Weber ◽  
Thomas Graf ◽  
Volkher Onuseit ◽  
David Brinkmeier ◽  
...  
Keyword(s):  
Analytical Model ◽  
Experimental Validation ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Picosecond Pulses ◽  
Hole Depth ◽  
Laser Percussion Drilling ◽  
Pulse Energies ◽  
Ultrashort Laser ◽  
Percussion Drilling

AbstractA simplified analytical model is presented that predicts the depth progress during and the final hole depth obtained by laser percussion drilling in metals with ultrashort laser pulses. The model is based on the assumption that drilled microholes exhibit a conical shape and that the absorbed fluence linearly increases with the depth of the hole. The depth progress is calculated recursively based on the depth changes induced by the successive pulses. The experimental validation confirms the model and its assumptions for percussion drilling in stainless steel with picosecond pulses and different pulse energies.

Electronic Raman scattering in

1986 ◽  
Vol 126 ◽  
pp. 302 ◽  
Author(s):  
G.M. Williams ◽  
P.C. Becker ◽  
J.G. Conway ◽  
N. Edelstein ◽  
M.M. Abraham ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Electronic Raman Scattering

scholarly journals Observation of Electronic Raman Scattering in Metallic Carbon Nanotubes

2011 ◽  
Vol 107 (15) ◽  
Author(s):  
H. Farhat ◽  
S. Berciaud ◽  
M. Kalbac ◽  
R. Saito ◽  
T. F. Heinz ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Scattering ◽  
Electronic Raman Scattering
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