Optical: systems and elements – Optical amplifier
Reexamination Certificate
2005-07-01
2010-06-01
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
C359S348000, C372S025000
Reexamination Certificate
active
07729045
ABSTRACT:
The present invention relates to an amplifier chain for generating ultrashort light pulses of different pulse durations and applies in particular to amplifier chains suitable for amplifying picosecond and femtosecond pulses. The amplifier chain comprising a stretcher with at least one entry dispersive element of the grating type and intended to temporally stretch an incident pulse, an amplifying medium designed to amplify said stretched pulse, a compressor with at least one entry dispersive element substantially identical to that of the stretcher, designed to temporally compress said amplified pulse. According to the invention, the stretcher and the compressor include means for moving the dispersive elements between first and second positions, in such a way that the angle of incidence in a first position is equal to the angle of diffraction in the second position, and vice versa, allowing two degrees of stretch of the chain to be defined, each adapted to the amplification of pulses of different durations.
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Falcoz Franck
Moro Vincent
Bolda Eric
Lowe Hauptman & Ham & Berner, LLP
Thales
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