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chirped pulse |
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A pulse in which the wavelength changes during the duration of the pulse. In a diode laser, chirp arises from direct modulation of the laser, because the refractive index changes with the electron density. The output of a laser may be chirped intentionally to create a high-powered, extremely short pulse. In this case, the initial pulse from an oscillator is stretched out using optics, amplified and then compressed back to its original duration. |
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Mourou, then at the University of Rochester in New York and now director of Michigan's optical science center, led a team that, to generate high-power laser pulses, invented a technique called chirped pulse amplification. With chirped pulse amplification, saysMourou, "we can use a system that is 1,000 times smaller. |
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chirped pulse