Laser pulse shaping system
First Claim
1. A laser beam pulse shaping system comprising:
- a laser beam pulse; and
a permanently fixed pulse shaper including multiple repeating and predetermined shaping patterns;
the fixed pulse shaper operably changing a phase characteristic of the pulse without computer control of the shaper;
wherein the patterns are offset as a function of a wave phase; and
wherein the fixed pulse shaper introduces multiphoton intrapulse interference in the pulse without computer control of the pulse shaper.
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Abstract
A laser system using ultrashort laser pulses is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention employs a femtosecond laser and a spectrometer. Still another aspect of the present invention uses a laser beam pulse, a pulse shaper and a SHG crystal. In yet another aspect of the present invention, a multiphoton intrapulse interference phase scan system and method characterize the spectral phase of femtosecond laser pulses. Fiber optic communication systems, photodynamic therapy and pulse characterization tests use the laser system with additional aspects of the present invention.
254 Citations
35 Claims
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1. A laser beam pulse shaping system comprising:
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a laser beam pulse; and a permanently fixed pulse shaper including multiple repeating and predetermined shaping patterns; the fixed pulse shaper operably changing a phase characteristic of the pulse without computer control of the shaper; wherein the patterns are offset as a function of a wave phase; and wherein the fixed pulse shaper introduces multiphoton intrapulse interference in the pulse without computer control of the pulse shaper. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. A laser beam pulse shaping system comprising a mirror including a preset shaping pattern thereon, and a phase of a laser pulse being tailored with the mirror, wherein the preset mirror introduces multiphoton intrapulse interference in the pulse without computer control of the mirror.
- 18. A laser beam pulse shaping system comprising a mirror including a preset shaping pattern thereon, and a phase of a laser pulse being tailored with the mirror, wherein the pattern includes a sine wave which repeats across the mirror with adjacent rows of the pattern being offset from each other, and wherein the preset mirror introduces multiphoton intrapulse interference in the pulse without computer control of the mirror.
- 20. A laser beam pulse shaping system comprising a mirror including a fixed two-dimensional wave pattern, and the mirror acting as a pulse shaper to introduce multiphoton intrapulse interference in a laser pulse in a preset manner free of computer control of the mirror pattern.
- 28. A laser beam pulse shaper system comprising a laser beam pulse and a device including a predetermined and fixed pulse shaping pattern, the device shaping the pulse to reduce undesired nonlinear optical distortions in the pulse, wherein the device introduces multiphoton intrapulse interference in the pulse without computer control of the device.
Specification