6 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Amplification"  
Results: 1 - 6
open access

Comparison of amplified spontaneous emission pulse cleaners for use in chirped pulse amplification front end lasers

Description: We compare various schemes for removing amplified spontaneous emission from seed laser pulses. We focus on compact schemes that are compatible with fiber laser front end systems with pulse energies in the 10nJ-1{micro}J range and pulse widths in the 100fs-10ps range. Pre-pulse contrast ratios greater than 10{sup 9} have been measured.
Date: July 2, 2007
Creator: Dawson, J.; Siders, C.; Phan, H.; Kanz, V. & Barty, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

3-D Model of Broadband Emission from Supernova Remnants Undergoing Non-linear Diffusive Shock Acceleration

Description: We present a 3-dimensional model of supernova remnants (SNRs) where the hydrodynamical evolution of the remnant is modeled consistently with nonlinear diffusive shock acceleration occurring at the outer blast wave. The model includes particle escape and diffusion outside of the forward shock, and particle interactions with arbitrary distributions of external ambient material, such as molecular clouds. We include synchrotron emission and cooling, bremsstrahlung radiation, neutral pion production… more
Date: July 2, 2008
Creator: Lee, Shiu-Hang; Kamae, Tuneyoshi & Ellison, Donald C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Transverse-coherence properties of the FEL at the LCLS

Description: The recently commissioned Linac Coherent Light Source is an x-ray free-electron laser at the SLAC National Accelerator Laboratory, which is now operating at x-ray wavelengths of 20-1.2 Angstrom with peak brightness nearly ten orders of magnitude beyond conventional synchrotron sources. Understanding of coherence properties of the radiation from SASE FELs at LCLS is of great practical importance for some user experiments. We present the numerical analysis of the coherence properties at different… more
Date: September 2, 2010
Creator: Ding, Yuantao
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pump Side-scattering in Ultra-powerful Backward Raman Amplifiers

Description: Extremely large laser power might be obtained by compressing laser pulses through backward Raman amplification (BRA) in plasmas. Premature Raman backscattering of a laser pump by plasma noise might be suppressed by an appropriate detuning of the Raman resonance, even as the desired amplification of the seed persists with a high efficiency. In this paper, we analyze side-scattering of laser pumps by plasma noise in backward Raman amplifiers. Though its growth rate is smaller than that of backsca… more
Date: March 2, 2004
Creator: A.A. Solodov, V.M. Malkin, and N.J. Fisch
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stardust and the Molecules of Life (Why are the Amino Acids Left-Handed?)

Description: A mechanism for creating and selecting amino acid chirality is identified, and subsequent chemical replication and galactic mixing that would populate the galaxy with the predominant species will be described. This involves: (1) the spin of the {sup 14}N in the amino acids, or in precursor molecules from which amino acids might be formed, coupling to the chirality of the molecules; (2) the neutrinos emitted from the supernova, together with magnetic field from the nascent neutron star or black … more
Date: April 2, 2010
Creator: Boyd, Richard N.; Kajino, Toshitaka & Onaka, Takashi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Petawatt Laser - Physics Today article

Description: The development of small scale multiterawatt and now pentawatt lasers is described. The intent was to develop a laser capable of producing pentawatt pulses in order to examine the fast ignitor concept for inertial confinement fusion. This application requires high pulse energy in addition to the short pulse duration. The essential idea is to pre-implode a deuterium-tritium capsule to an isochoric condition.
Date: July 2, 1997
Creator: Perry, Michael D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen