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Abstract

Optical pulse source comprising optical pump laser for generating optical pump pulses at repetition rate Rf; a nonlinear optical element comprising an optical fiber for generating supercontinuum pulses; a gating device provided operable to selectively control the launch of pump pulses into the optical fiber at a reduced, lower repetition rate Rr=Rf/N in order to generate supercontinuum pulses at different user selectable repetition rates lower than the pump pulse repetition rate; first and second optical amplifiers; wavelength tunable optical bandpass filter; wherein the optical fiber can generate supercontinuum pulses having a supercontinuum spanning from below 450 nm to greater than 2000 nm; and wherein said optical pulse source comprises an all-fiber source wherein said optical pump laser comprises a fiber oscillator, said gating device comprises a fiber coupled optical modulator, and the optical pump pulses are launched into the optical fiber without the use of free space optics.

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