High power fiber chirped pulse amplification system...

Details High power fiber chirped pulse amplification system... High power fiber chirped pulse amplification system...

2011-03-15

2011-03-15

Bolda, Eric (Department: 3663)

Optical: systems and elements

Optical amplifier

Optical fiber

C359S333000, C372S025000

Reexamination Certificate

active

07907334

ABSTRACT:
A chirped pulse amplifier (CPA) system having a mode-locked laser and a high-speed pulse selector, wherein the pulse selector modulates output pulses based upon an applied modulation voltage. A pulse selector may be an integrated electro-optic modulator, for example a LiNbO3modulator, or an electro-absorption modulator. Difficulties related to free-space alignment and operational stability of some prior designs are reduced or eliminated. Fiber coupling generally simplifies beam delivery and alignment. Some embodiments include an erbium fiber (or erbium-ytterbium) based CPA system operating at a wavelength of approximately 1550 nanometers. Similar performance can be obtained at other wavelengths, for example a 1.06 micrometer Yb-doped fiber system. Moreover, high amplification and peak intensity at the output may be achieved while avoiding non-linear effects in the pulse selector, thereby providing for high intensity picosecond or femtosecond operation.

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