Laser filament imager

Details Laser filament imager Laser filament imager

2005-06-27

2008-03-04

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular active media

Gas

C372S059000

Reexamination Certificate

active

07339972

ABSTRACT:
An apparatus includes a gas chamber comprising a gas feed nozzle, an exhaust nozzle, and a window. The apparatus also includes a first partial reflector, in the gas chamber, sharing an optical path with the exhaust nozzle, and the window. Optionally, The apparatus includes a gas source communicating with the gas feed nozzle. Optionally, the gas source includes a gas having an ionization potential higher than air and a nonlinear index of refraction lower than air.

REFERENCES:
patent: 3633650 (1972-01-01), Schaumburg
patent: 6487229 (2002-11-01), Govorkov et al.
patent: 6624424 (2003-09-01), Eckert et al.
La Fontaine, B., “Filamentation of ultrashort pulse laser beams resulting from their propagation over long distances in air” Physics of Plasmas vol. 6, No. 5 May 1999 pp. 1615-1621.
Courvoisier, F., “Ultraintense light filaments transmitted through clouds” Applied Physics Letters vol. 83, No. 2 Jul. 14, 2003 pp. 213-215.
Ladouceur, H.D., “Electrical conductivity of a femtosecond laser generated plasma channel in air” Optics Communications 189 (2001) pp. 107-111.
Tzortzakis, S., “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air” Optics Communications 181 (2000) pp. 123-127.

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