Soliton resonant mode-locked laser with high peak power dissipation

Abstract

The invention discloses a soliton resonance mode-locked laser with high peak power dissipation, and aims to provide a laser capable of outputting high peak power pulses of the order of thousands of watts without an amplifier. The laser consists of two pump light sources, two beam combiners, two gain optical fibers, a filter, a Polarization Independent Isolator, a polarization controller, a first pump source, a pump input arm of the first beam combiner, a first gain optical fiber, an input arm a of the first coupler, an output arm b of the first coupler, a filter, an input arm b1 of the secondcoupler, an output arm a1 of the second coupler, a polarization independent isolator, and a signal input arm of the first beam combiner are connected to form a unidirectional loop; An output arm c ofthe first coupler opposite to the input arm a is connected to a second beam combiner, a second gain optical fiber, a polarization controller and an output arm d of the first coupler on the same side as the output arm c to form a non-linear amplifying loop mirror. As the length of the optical fibers of the invention is small, the power can be improved to the order of thousands of watts without an amplifier.

Description

technical field [0001] The invention relates to a dissipative soliton resonance mode-locked laser, in particular to a dissipative soliton resonant mode-locked laser which can directly generate kilowatt-level peak power without an amplifier. Background technique [0002] The supercontinuum light source has the advantages of wide spectrum, high brightness and good spatial coherence at the same time, so it has a wide range of applications in optical measurement, molecular spectroscopy, biomedical imaging and optical biological tissue erosion, and is a research hotspot in the field of light sources one. At present, the supercontinuum is mainly obtained by inputting pulsed laser into a photonic crystal fiber for nonlinear broadening. The pulsed laser performance of pulsed fiber laser output is determined by its mode-locking mechanism. According to the intracavity pulse evolution mode, there are mainly three types: traditional soliton mode-locking, dispersion-managed soliton mod...

AI Technical Summary

Problems solved by technology

The amplifier construction process involves welding between various devices and between devices and optical fibers, which is cumbersome and costly; and the use of pumping and amplifying seed pulse lasers has limited utilization of the pump light source, and the common optical-optical efficiency It is only about 60%, and the electro-optical efficiency is only about 50%, so there is a large energy loss; according to the required amplification value, it is necessary to change the device and fiber parameters in the amplifier to match the amplification power, otherwise in The process of amplifying and generating high peak power pulses is likely to cause breakdown or burning of optical isolators and optical fibers in the amplifier, and modifying the amplifier is also a cumbersome task, which requires high professional requirements for laser users and is difficult to popularize

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