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Phase shifter, mode-locked laser and control method of mode-locked laser

A technology of mode-locked lasers and phase shifting, which is applied in the direction of lasers, laser components, and the structure/shape of active media, which can solve the problems of inconvenient adjustment of phase difference

Inactive Publication Date: 2021-08-03
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is very inconvenient to adjust the phase difference of the mode-locked fiber laser through the non-reciprocal phase shifter in the traditional technology

Method used

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  • Phase shifter, mode-locked laser and control method of mode-locked laser
  • Phase shifter, mode-locked laser and control method of mode-locked laser
  • Phase shifter, mode-locked laser and control method of mode-locked laser

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Embodiment Construction

[0031] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0033] It can be understood that the terms "first", "second" and the like used in this application may be...

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Abstract

The invention relates to a phase shifter, a mode-locked laser, a control method of the mode-locked laser and a computer readable storage medium. The phase shifter comprises a first Faraday rotator used for receiving first polarized light in a first direction and rotating the vibration direction of the first polarized light by-45 degrees to output second polarized light; a variable wave plate which is used for receiving the second polarized light in the first direction, adding the first phase shift to the second polarized light and then outputting fifth polarized light; a second Faraday rotator which is used for receiving the fifth polarized light in the first direction and rotating the vibration direction of the fifth polarized light by 45 degrees to output eighth polarized light; and a voltage controller which is electrically connected with the variable wave plate and is used for controlling the input voltage of the variable wave plate so as to adjust the refractive index of the variable wave plate. According to the phase shifter, the phase difference of the phase shifter can be adjusted when the phase shifter is in the working state, the convenience and the working efficiency of the phase shifter are improved, and the working cost of the phase shifter is reduced.

Description

technical field [0001] The invention relates to the field of fiber laser technology, in particular to a phase shifter, a mode-locked laser, a control method of the mode-locked laser and a computer-readable storage medium. Background technique [0002] Mode-locked lasers have the characteristics of ultra-short pulse, definite repetition rate, and high peak power, and have irreplaceable application value in scientific research and industrial processing. However, compared with ordinary lasers, mode-locked lasers are difficult to self-start, susceptible to external interference, and high in price, which hinders their application. [0003] At present, mode-locked fiber lasers are based on the structure of nonlinear ring mirrors, introducing mirrors to shorten the cavity length, and using non-reciprocal phase shifters to increase the phase shift difference, thereby reducing the start-up power of mode-locking to overcome the mode-locking The problem that the laser is difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10H01S3/098H01S3/067
CPCH01S3/10053H01S3/1106H01S3/067
Inventor 罗智超李体鉴刘萌罗爱平徐文成
Owner SOUTH CHINA NORMAL UNIVERSITY