Research/Patents/US 5822097
US 5822097

LINEAR EXTENSION DEVICE FOR COHERENT OPTICAL WAVE PULSES AND EXTENSION AND COMPRESSION DEVICE USED TO OBTAIN HIGH POWER PULSES

Assignee

THOMSON-CSF

Filed

Nov 7, 1994

Granted

Oct 13, 1998

Location

CAGNES S/MER FR

Abstract

A device for linearly extending the duration of laser light pulses by subjecting the pulses to double diffraction based on a series of variable step gratings placed at right angles to each other. Increased power density is obtained by placing a compression grating at an angle such that each wavelength of light emerging from the compression grating travels an optical path of approximately the same distance, and focusing the emerging light with a lens. Increased amplification is obtained by placing a segmented laser amplifier, one segment aligned with each wavelength of light separated by the double diffraction of the series of variable step gratings and interposed between the series of variable step gratings and the compression grating.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Mar 21, 1995

Rescinded

Jul 7, 1997

Duration

2 years, 3 months

Inventor

  • 1PIERRE TOURNOIS

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records