James B. Murphy
Brookhaven National Laboratory
80 Papers
283 Citations
James B. Murphy is an academic researcher from Brookhaven National Laboratory. The author has contributed to research in topics: Laser & Free-electron laser. The author has an hindex of 15, co-authored 80 publications.
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Papers
Nonlinear cross-phase modulation with intense single-cycle terahertz pulses.
Y. Shen,T. Watanabe,Dario Arena,Chi-Chang Kao,James B. Murphy,Thomas Tsang,Xijie Wang,G. L. Carr +7 more
TL;DR: This work has demonstrated nonlinear cross-phase modulation in electro-optic crystals using intense, single-cycle terahertz (THz) radiation, leading to spectral shifting, broadening, and modulation of copropagating laser pulses.
150
Efficiency and Spectrum Enhancement in a Tapered Free-Electron Laser Amplifier
TL;DR: The first experimental characterization of efficiency and spectrum enhancement in a laser-seeded free-electron laser using a tapered undulator is reported, in good agreement with predictions using the MEDUSA simulation code.
First SASE and seeded FEL lasing of the NSLS DUV FEL at 266 and 400 nm
Louis F. DiMauro,A. Doyuran,William Graves,R. Heese,Erik D. Johnson,Samuel Krinsky,Henrik Loos,James B. Murphy,George Rakowsky,James Rose,T.V. Shaftan,B. Sheehy,John Skaritka,Xuelong Wang,Li-Hua Yu +14 more
- 11 Jul 2003
TL;DR: In this article, the Deep Ultra-Violet Free Electron Laser (DUVFEL) at the National Synchrotron Light Source (NSLS) was demonstrated at both 266 and 400 nm and the gain length was measured to be 66 cm in both cases and up to 20 nJ per pulse was obtained.
28
Spatiotemporal control of ultrashort laser pulses using intense single-cycle terahertz pulses
TL;DR: In this article, the authors demonstrate that the intense electric field of a sub-picosecond single-cycle terahertz pulse can control and manipulate the temporal, spectral, and spatial phase of a copropagating ultrashort laser pulse through the Pockels effect in an electro-optic crystal.
18
Investigation of coherent emission from the NSLS VUV ring
G. L. Carr,S.L. Kramer,James B. Murphy,J. LaVeign,R. P. S. M. Lobo,David H. Reitze,David B. Tanner +6 more
- 01 Mar 1999
TL;DR: In this article, it was found that the average intensity of the emission increases with the synchrotron frequency, indicating a linear dependence on momentum compaction, and that the coherent emission is a consequence of micro-bunching of the electron beam due to the microwave instability.