Plasma-induced spectral broadening of high-energy ultrashort laser pulses in a helium-filled multiple-pass cell

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Journal of the Optical Society of America. Part B, Optical Physics

DOI:https://doi.org/10.1364/JOSAB.23.001946· OSTI ID:20860733

Nurhuda, Muhammad; Suda, Akira; Midorikawa, Katsumi ^[1]

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1. RIKEN - Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako-shi, Saitama 351-0198 (Japan) and Department of Physics, Brawijaya University, Malang, 65144 (Indonesia)

We investigated the possibility of plasma-induced spectral broadening of high-energy ultrashort laser pulses in a helium-filled multipass cell (MPC) through a series of full numerical simulations of the extended nonlinear Schroedinger equation. It was found that the gas pressure must be set low so that the propagation dynamics can be controlled only by plasma defocusing. Simulations using 100 mJ, 40 fs laser pulses in the MPC, which is 6 m long and has a mirror of 3.1 m radius at each end, showed that if the gas pressure is set within the range of 40-130 Pa, then the relevant spectral broadening can be obtained after five passes, yielding compressed pulses of a 4.7-6.4 fs width. The ratio of the energy of the compressed pulse to the output pulse is found to be within 58-88%.

• OSTI ID: 20860733
• 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: 9 Vol. 23; ISSN JOBPDE; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HELIUM
LASERS
LIGHT TRANSMISSION
LINE BROADENING
NONLINEAR PROBLEMS
PLASMA
PULSES
SCHROEDINGER EQUATION
SIMULATION