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Wavelength-adjustable all-fiber nanosecond pulse laser device based on photonic crystal fiber and system

A technology of photonic crystal fiber and laser, applied in the field of laser

Active Publication Date: 2019-12-03
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing pulsed lasers need to be further optimized in terms of laser structure and wavelength tunability.

Method used

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  • Wavelength-adjustable all-fiber nanosecond pulse laser device based on photonic crystal fiber and system
  • Wavelength-adjustable all-fiber nanosecond pulse laser device based on photonic crystal fiber and system
  • Wavelength-adjustable all-fiber nanosecond pulse laser device based on photonic crystal fiber and system

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] At present, the existing pulsed lasers need to be further optimized in terms of laser structure and wavelength tunability. Based on this, the embodiment of the present invention provides a wavelength-tunable all-fiber nanosecond pulsed laser and system based on photonic crystal fibers. The method has the advantages of small volume, simple structure and low cost, and can realiz...

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Abstract

The invention provides a wavelength-adjustable all-fiber nanosecond pulse laser device based on a photonic crystal fiber and a system. The laser device comprises a pump light input unit, an isolator,a wavelength tuning unit, a high-nonlinearity optical fiber and a laser output unit which are sequentially connected through optical fibers, wherein the pump light input unit is connected with the laser output unit through the optical fiber, the pump light input unit is further connected with an external pump light source and is used for obtaining the pump light, coupling the pump light and then obtaining signal light, the isolator is used for ensuring laser operation unidirectionality, the wavelength tuning unit comprises a first polarization controller, a photonic crystal fiber and a secondpolarization controller which are sequentially connected through the optical fibers, the high-nonlinearity optical fiber is used for improving nonlinearity and dispersion of the signal light, and thelaser output unit is used for obtaining and outputting ultrafast pulse laser based on the signal light. The laser device is simple in structure, small in size and suitable for various application occasions such as communication.

Description

[0001] (1) Technical field [0002] The invention relates to the field of laser technology, in particular to a wavelength-tunable all-fiber nanosecond pulse laser and a system based on a photonic crystal fiber. [0003] (2) Background technology [0004] Photonic crystal fiber has unique characteristics that ordinary optical fiber does not have. Its optical nonlinear coefficient is high, and its anomalous dispersion characteristics are easy to control. Photonic crystal fiber can be used to obtain laser pulses with tunable wavelength. At the same time, the highly nonlinear optical fiber can increase the nonlinearity of the signal light, thereby realizing the generation of nanosecond pulses. The wavelength-tunable all-fiber nanosecond pulse laser based on photonic crystal fiber has the advantages of simple structure, small size and low manufacturing cost, and can be widely used in communication, material processing, nonlinear optics and other fields. Therefore, the existing puls...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/108H01S3/11H01S3/094H01S3/0941
CPCH01S3/06712H01S3/06716H01S3/06741H01S3/06791H01S3/094003H01S3/0941H01S3/108H01S3/1118
Inventor 付博何伯衢尚策孙婧轩王钟徽高硕
Owner BEIHANG UNIV
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