Laser system employing harmonic generation
First Claim
1. A laser system comprising a laser operably emitting a laser pulse, a gaseous optical medium operably creating third or greater order harmonic generation in the pulse, and a controller assisting in compensating for spectral phase distortions in the pulse, the controller using Multiphoton Intrapulse Interference Phase Scan to measure and compensate for distortions in the pulse.
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Accused Products
Abstract
A laser system provides harmonic generation in a laser beam pulse. In another aspect of the present invention, a laser operably remits a laser pulse, a gaseous optical medium operably creates third or greater harmonic generation in the pulse, and a controller characterizes and compensates for distortions in the pulse. A further aspect of the present invention employs multiple optical media arranged to cause cascading harmonic generations in a laser pulse.
256 Citations
36 Claims
- 1. A laser system comprising a laser operably emitting a laser pulse, a gaseous optical medium operably creating third or greater order harmonic generation in the pulse, and a controller assisting in compensating for spectral phase distortions in the pulse, the controller using Multiphoton Intrapulse Interference Phase Scan to measure and compensate for distortions in the pulse.
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10. A method of operating a laser system comprising:
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(a) shaping at least one laser beam pulse of less than 50 fs; (b) focusing the at least one shaped pulse in a gas without a crystal to generate third or greater harmonic generation, or zero order harmonic generation in the at least one pulse; (c) automatically varying the shape of the at least one pulse to minimize distortions therein; and (d) using multiphoton intrapulse interference software to automatically characterize and compensate for undesired characteristics in the at least one pulse. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A laser system comprising:
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a laser operably emitting at least one laser pulse; a pulse shaper operably varying a characteristic of the at least one laser pulse; a spectrometer operably measuring a feature of the at least one laser pulse; and a controller connected with the spectrometer and pulse shaper to characterize spectral phase distortions in the at least one laser pulse, the controller directly determining a second derivative of an unknown phase in terms of a reference phase. - View Dependent Claims (21, 23, 24, 25, 26, 27, 28, 30)
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22. A laser system comprising:
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a laser operably emitting at least one laser pulse; a pulse shaper operably varying a characteristic of the at least one laser pulse; a detector operably measuring a feature of the at least one laser pulse; and a controller connected with the detector and pulse shaper to characterize spectral phase distortions in the at least one laser pulse, the controller directly determining a second derivative of an unknown phase in terms of a reference phase; wherein the controller uses Multiphoton Intrapulse Interference Phase Scan software to determine an intensity of a nonlinear optical process without a full spectrum. - View Dependent Claims (34, 35, 36)
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29. A laser system comprising:
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a laser operably emitting at least one laser beam pulse having a duration of 50 fs or less; a gaseous medium operably creating third or greater order harmonic generation in the at least one pulse, the gaseous medium being remotely located at least five meters away from the laser; a pulse shaper operably shaping the at least one pulse; a controller, using multiphoton intrapulse interference software, controlling shaping characteristics of the pulse shaper and assisting in at least one of characterizing of or compensating for spectral phase distortions in the at least one pulse; and a focusing optic operably focusing the at least one pulse at the gaseous medium. - View Dependent Claims (31, 32, 33)
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Specification