Plasma Bragg density gratings produced by optical-field ionization

Journal Article · Sun Nov 15 04:00:00 EST 2009 · Journal of the Optical Society of America. Part B, Optical Physics

DOI:https://doi.org/10.1364/JOSAB.26.002095· OSTI ID:22046831

Lule, Yu ^[1]; Zhengming, Sheng; Jie, Zhang ^[1]

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1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)

Plasma Bragg density gratings produced by optical-field ionization in underdense gas under the irradiation of two counterpropagating laser pulses at laser intensities around 10{sup 13} W/cm{sup 2} are investigated by particle-in-cell simulation. The grating is composed of interlacing layers of neutral gas and plasma (or partially ionized gas) with its density and period controlled by the initial gas density, laser wavelengths, and intersecting angles of the two laser pulses. The study shows that such gratings have a longer lifetime, about nanoseconds, as compared with those driven by the laser ponderomotive force at higher laser intensities around 10{sup 15} W/cm{sup 2}. They may be used for phase-matched high-harmonic generation, laser self-guiding, laser pulse compression and stretching, etc.

• OSTI ID: 22046831
• Journal Information: Journal of the Optical Society of America. Part B, Optical Physics, Journal Name: Journal of the Optical Society of America. Part B, Optical Physics Journal Issue: 11 Vol. 26; ISSN JOBPDE; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPUTERIZED SIMULATION
DIFFRACTION GRATINGS
HARMONIC GENERATION
IONIZATION
LASER-PRODUCED PLASMA
LASERS
LAYERS
PHOTON BEAMS
PLASMA DENSITY
PLASMA PRODUCTION
PLASMA SIMULATION
PONDEROMOTIVE FORCE
PULSED IRRADIATION
PULSES