Coherent light generators – Particular active media – Gas
Reexamination Certificate
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.
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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.
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Briscoe Eldridge
Gordon Daniel
Ting Antonio
Karasek John J.
Koshy Suresh
Rodriguez Armando
United States of America as represented by the Secretary of the
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