scholarly journals Free-electron qubits and maximum-contrast attosecond pulses via temporal Talbot revivals

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
M. V. Tsarev ◽  
A. Ryabov ◽  
P. Baum
Keyword(s):  
Free Electron ◽  
Attosecond Pulses

Chirp waveform control to produce broad harmonic plateau and single attosecond pulse

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hang Liu ◽  
Cui-Yan Xu ◽  
Xiao-Dan Jing ◽  
Yan Qiao ◽  
Li-Qiang Feng
Keyword(s):  
Instantaneous Frequency ◽  
Free Electron ◽  
Fourier Transformation ◽  
Attosecond Pulse ◽  
The Other ◽  
Laser Parameters ◽  
Waveform Control ◽  
Chirped Pulses ◽  
Attosecond Pulses

Abstract Waveform control of three kinds of chirped pulses (i.e. βt, βt 2 and βt 3) to produce harmonic spectra and attosecond pulses has been investigated. It is found that by properly choosing the chirps, the chirp delays and the other laser parameters, not only the instantaneous frequency of some specific half profiles can be decreased, but also its intensity can be increased. As a result, the free electron can receive more energy when it accelerates in these regions, thus leading to the extension of the harmonic cutoff and harmonic plateau. Finally, through the Fourier transformation of the harmonic spectra and by superposing some harmonics, three single attosecond pulses with the durations of 30 as, 33 as and 39 as can be obtained.

Generation and Characterization of Attosecond Pulses from an X-ray Free-electron Laser

2019 ◽  
Author(s):  
Siqi Li ◽  
Philipp Rosenberger ◽  
Elio G. Champenois ◽  
Taran Driver ◽  
Philip H. Bucksbaum ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
X Ray ◽  
Attosecond Pulses

Artifact-free electron microscopic immunocytochemistry on rat brain tissue

1991 ◽  
Vol 49 ◽  
pp. 272-273
Author(s):  
Veronika Burmeister ◽  
N. Ludvig ◽  
P.C. Jobe
Keyword(s):  
Microscopic Examination ◽  
Free Electron ◽  
Electron Microscopic Examination ◽  
Ultrastructural Localization ◽  
Rabbit Serum ◽  
Electron Microscopic ◽  
Electron Microscopic Immunocytochemistry ◽  
Phosphate Buffered Saline ◽  
Rat Brain Tissue ◽  
Immune Rabbit

Electron microscopic immunocytochemistry provides an important tool to determine the ultrastructural distribution of various molecules in both normal and pathologic tissues. However, the specific immunostaining may be obscured by artifactual immunoreaction product, misleading the investigator. Previous observations show that shortening the incubation period with the primary antibody from the generally used 12-24 hours to 1 hour substantially reduces the artifactual immunostaining. We now extend this finding by the demonstration of artifact-free ultrastructural localization of the Ca2/calmodulindependent cyclic nucleotide phosphodiesterase (CaM-dependent PDE) immunoreactivity in brain.Anesthetized rats were perfused transcardially with phosphate-buffered saline followed by a fixative containing paraformaldehyde (4%) and glutaraldehyde (0.25%) in PBS. The brains were removed, and 40μm sections were cut with a vibratome. The sections were processed for immunocytochemistry as described by Ludvig et al. Both non-immune rabbit serum and specific CaM-dependent PDE antibodies were used. In both experiments incubations were at one hour and overnight. The immunostained sections were processed for electron microscopic examination.

FAR INFRARED FREE ELECTRON LASER

1983 ◽  
Vol 44 (C1) ◽  
pp. C1-385-C1-385
Author(s):  
E. D. Shaw ◽  
R. M. Emanuelson ◽  
G. A. Herbster
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Far Infrared

TAPERED WIGGLER FREE ELECTRON LASERS DRIVEN BY NON-MONOENERGETIC ELECTRON BEAMS

1983 ◽  
Vol 44 (C1) ◽  
pp. C1-371-C1-371 ◽  
Author(s):  
J. C. Goldstein ◽  
W. B. Colson ◽  
R. W. Warren
Keyword(s):  
Free Electron ◽  
Electron Beams ◽  
Free Electron Lasers ◽  
Monoenergetic Electron
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