Saturable absorption device, preparation method and optical fiber pulse laser

A saturable absorption and optical fiber technology, applied in lasers, laser components, electrical components, etc., can solve the problems of easy degradation of black phosphorus and low damage threshold of SESAM

Inactive Publication Date: 2019-06-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In the prior art, semiconductor saturable absorbing mirrors (SESAM) and black phosphorus have been used to make saturable absorbing devices to realize Q-switching or mode-locking, but SESAM has a low damage threshold and black phosphorus is easy to degrade. Therefore, how to It is a current research hotspot to fabricate saturable absorbing devices with excellent performance to fabricate pulsed lasers with stable performance.

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  • Saturable absorption device, preparation method and optical fiber pulse laser
  • Saturable absorption device, preparation method and optical fiber pulse laser
  • Saturable absorption device, preparation method and optical fiber pulse laser

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Embodiment Construction

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0047] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. It should be noted that the orientation words such as "up", "down", "left", and "right" described in the embodiments of the present invention are described from the angles shown in the drawings, and should not be interpreted as a reference to the implementation of the present invention. Example limitations. Also in this context, it also nee...

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Abstract

The embodiment of the invention discloses a saturable absorption device, a preparation method and an optical fiber pulse laser. The saturable absorption device comprises an optical element and a saturable absorption film, wherein the saturable absorption film is disposed in the optical transmission path of the optical element; and the saturable absorption film comprises lead selenide. The saturable absorption device provided by the embodiment of the invention utilizes the saturable absorption characteristics of lead selenide to compress the continuous laser into pulsed laser, which has the characteristics of good photoconductive effects and sensitive response, and can be stably generated Q-switched or mode-locked laser pulses when mounted in an optical fiber laser.

Description

technical field [0001] Embodiments of the present invention relate to fiber laser technology, in particular to a saturable absorption device, a preparation method and a fiber pulse laser. Background technique [0002] With the development of science and technology, the application of laser is more and more extensive. CW lasers have low peak power and have limitations in some fields, requiring pulsed lasers with higher peak energy. Compared with other lasers, fiber lasers have the advantages of low manufacturing cost, simple structure, good stability, and easy coupling to fiber optic devices. They are currently widely used in fiber optic communications, fiber optic sensing, and laser processing. [0003] Q-switching and mode-locking are the main methods for generating ultrashort pulses in lasers. Q-switching technology is to increase the loss of the resonator as much as possible at the beginning to form a population inversion, and then suddenly turn on the Q switch to quick...

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Application Information

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IPC IPC(8): H01S3/11H01S3/098
Inventor 毛东贺志文高群胡崔宸
Owner NORTHWESTERN POLYTECHNICAL UNIV
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