Laser pulse shaping
AssigneeJersey Nuclear-Avco Isotopes, Inc.
InventorJames A. Horton
Life of this patent
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Abstract
A system for temporal pulse shaping of laser radiation beams particularly for use as photoexcitation radiation in isotope separation. Each pulse of laser radiation is temporally segmented into two or more sections. The sections may be superimposed after a delay in the leading one to augment the pulse intensity, or the segmented pulses may be separately used as segments in a desired application, or the pulse rise time may be decreased by segmenting the pulse so as to permit rejection of the more slowly rising leading edge.
Claims19
A system for pulse shaping pulsed radiation employed in photoexcitation comprising:
- means defining an environment of particles;
- a source of pulsed radiation;
- means responsive to the pulsed radiation from said source for segmenting each pulse of radiation into temporally distinct segments;
- means for separating the segments onto separate paths;
- and
- means for applying the pulse segments on at least one of the different paths for producing photoexcitation of particles of said environment.
A system for pulse shaping pulsed radiation employed in photoexcitation comprising:
- a source of pulsed radiation;
- means responsive to the pulsed radiation from said source for segmenting each pulse of radiation into temporally distinct segments;
- means for separating the segments onto separate paths;
- and
- means responsive to the pulse segments on at least one of the different paths for producing photoexcitation;
- said segmenting means includes means for pulse shaping at least one of said segments;
- a polarization rotator responsive to the pulsed radiation;
- and
- means for controlling the rotation of polarization on said polarization rotation means to provide said segment substantially in a square waveform.
A system for pulse shaping pulsed radiation employed in photoexcitation comprising:
- a source of pulsed radiation;
- means responsive to the pulsed radiation from said source for segmenting each pulse of radiation into temporally distinct segments;
- means for separating the segments onto separate paths;
- and
- means responsive to the pulse segments on at least one of the different paths for producing photoexcitation;
- at least one further source of pulsed radiation with the radiation applied to said photoexcitation producing means;
- and
- wherein said segmenting means provides a segment for application to said photoexcitation producing means with an enhanced rise time leading edge occurring a fraction of the pulse duration subsequent to the leading edge of the radiation pulse of said at least one further source.
A system for pulse shaping pulsed radiation employed in photoexcitation comprising:
- a source of pulsed radiation;
- means responsive to the pulsed radiation from said source for segmenting each pulse of radiation into temporally distinct segments;
- means for separating the segments onto separate paths;
- and
- means responsive to the pulse segments on at least one of the different paths for producing photoexcitation;
- said segmenting means includes means for segmenting each pulse to provide an enhanced rise time in at least one segment and in which said one segment is applied to the path for producing photoexcitation;
- a polarization rotator responsive to the pulsed radiation;
- means for controlling the rotation of polarization on said polarization rotation means to provide said segment substantially in a square waveform.
A system for pulse shaping pulsed radiation employed in photoexcitation comprising:
- a source of pulsed radiation;
- means responsive to the pulsed radiation from said source for segmenting each pulse of radiation into temporally distinct segments;
- means for separating the segments onto separage paths;
- and
- means responsive to the pulse segments on at least one of the different paths for producing photoexcitation;
- said segmenting means include means for segmenting each pulse to provide an enhanced rise time in at least one segment and in which said one segment is applied to the path for producing photoexcitation.
- at least one further source of pulsed radiation with the radiation thereof applied to said photoexcitation producing means;
- and
- wherein said segmenting means provides a segment for application to said photoexcitation producing means with an enhanced rise time leading edge occurring a fraction of the pulse duration subsequent to the leading edge of the radiation pulse of said at least one further source.
A system for pulse shaping pulsed radiation employed in photoexcitation comprising:
- a source of pulsed radiation;
- means responsive to the pulsed radiation from said source for segmenting each pulse of radiation into temporally distinct segments;
- means for separating the segments onto separate paths;
- and
- means responsive to the pulse segments on at least one of the different paths for producing photoexcitation;
- a plurality of the segmenting and separating system wherein each respective radiation source provides a different frequency of radiation;
- and
- plural means each responsive to the corresponding segments of plused radiation of different colors for superimposing one upon the other for application to said photoexcitation producing means.
A system for pulse shaping pulsed radiation employed in phtoexcitation comprising:
- means defining an environment of particles having a characteristic time for being photoexcited;
- a source of pulsed radiation;
- the pulse duration of which is substantially longer than said characteristic time;
- means responsive to the pulsed radiation from said source for segmenting each pulse of radiation into temporally distinct segments, each shorter than the pulse duration provided by said source;
- means for separating the segments onto separate paths;
- and
- means responsive to the pulse segments on at least one of the different paths for producing photoexcitation of particles of said environment.
Dependencies are inferred from the claim text.