Ytterbium-doped ultrashort pulse fiber laser for dispersion compensation in cavity

Abstract

An ytterbium-doped ultrashort pulse fiber laser for dispersion compensation in a cavity comprises a semiconductor pumping source connected with the input end of a wavelength division multiplexer as well as a photonic crystal fiber, a fiber coupling follower, polarization controllers and an optical isolator sequentially connected with the output end of the wavelength division multiplexer. Both ends of the optical isolator are provided with the polarization controllers; the wavelength division multiplexer, the photonic crystal fiber, the fiber coupling follower, the polarization controllers and the optical isolator are welded by optical fibers to form an annular cavity; a transmission-type semiconductor saturable absorption mirror is arranged between the wavelength division multiplexer and the photonic crystal fiber and is used for mode locking of the ytterbium-doped ultrashort pulse fiber laser; and one segment of the optical fiber between the wavelength division multiplexer and the transmission-type semiconductor saturable absorption mirror is an ytterbium-doped optical fiber. The ytterbium-doped ultrashort pulse fiber laser can be self-started and has wide application prospect.

Description

technical field

[0001] The invention relates to an ultrashort pulse fiber laser, in particular to an ytterbium-doped ultrashort pulse fiber laser with intracavity dispersion compensation. Background technique

[0002] Compared with traditional solid-state lasers, fiber lasers have been extensively studied for their small size, high light-to-light conversion efficiency, and high stability. Among them, especially Er-doped lasers that can be used for communication 3+ Fiber lasers and amplifiers are the most researched, and Er-doped 3+ Compared with fiber lasers, there is less research on ytterbium-doped fiber lasers. With the increasing demand for high power and high peak power in laser processing, ytterbium-doped fiber lasers have also received increasing attention.

[0003] For the emission spectrum of ytterbium ions, there is a strong positive dispersion in the silica fiber, so in order to make the ytterbium-doped fiber laser generate shorter pulses, it is necessary to perf...

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