Optical: systems and elements – Optical amplifier
Reexamination Certificate
2006-05-17
2008-10-21
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Reexamination Certificate
active
07440162
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. Moreever, 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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Gu Xinhua
Harter Donald
Uehara Yuzuru
Bolda Eric
IMRA America, Inc.
Sughrue & Mion, PLLC
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