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Two-dimensional material heterojunction saturated absorption mirror and preparation method thereof

A technology of saturable absorption and two-dimensional materials, which is applied in the field of two-dimensional material heterojunction saturable absorption mirrors and its preparation, can solve the problems of high price, low reliability and complicated manufacturing process of commercial SESAM, and achieve optimal nonlinearity The effect of optical properties, low cost, and simple preparation process

Inactive Publication Date: 2017-06-30
SHENZHEN UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a two-dimensional material heterojunction saturable absorber mirror and its preparation method, and a pulsed fiber laser, aiming to solve the problem of expensive, complicated and reliable commercial SESAM used in the prior art. low sex defect

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  • Two-dimensional material heterojunction saturated absorption mirror and preparation method thereof
  • Two-dimensional material heterojunction saturated absorption mirror and preparation method thereof
  • Two-dimensional material heterojunction saturated absorption mirror and preparation method thereof

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, 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, not to limit the present invention.

[0028] The first embodiment of the present invention provides a two-dimensional material heterojunction saturable absorption mirror 100, which includes a base 101 with etched electrodes 102, a gold film layer 103 covering the base 101, and a gold film layer 103 covering the Atomic level two-dimensional material p-n junction thin film 104;

[0029] The two-dimensional material heterojunction saturable absorber mirror 100 also includes an adjustable DC power source 106 connected to the electrode 102 .

[0030] The two-dimensional material heterojunction saturable absorption mirror provided by the fi...

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Abstract

The invention is applicable to the technical field of laser and provides a two-dimensional material heterojunction saturated absorption mirror. The absorption mirror comprises a substrate etched with electrodes, a gold film layer covering the substrate and an atomic hierarchical two-dimensional material p-n junction film covering the gold film layer. The two-dimensional material heterojunction saturated absorption mirror further comprises an adjustable direct-current power supply, wherein the adjustable direct-current power supply is connected with the electrode. The external direct-current bias voltage amplitude is changed by exerting external direct-current bias voltages different in amplitude value of the adjustable direct-current power supply to the symmetrical electrodes of the two-dimensional material heterojunction saturated absorption mirror, the nonlinear optical properties of the two-dimensional material heterojunction saturated absorption mirror are actively optimized, and the laser properties of a pulse fiber laser are further optimized.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to a two-dimensional material heterojunction saturable absorption mirror and a preparation method thereof. Background technique [0002] The use of passive mode-locking technology is an effective way for fiber lasers to achieve ultrafast pulse output, and the key technology of passive mode-locking is the need for saturable absorption in the fiber laser resonator. At present, researchers have used a variety of saturable absorption effects to obtain passively mode-locked ultrafast pulse outputs in fiber lasers. In general, in order to overcome the instability of the fiber laser mode-locking environment, researchers usually use a semiconductor saturable absorber mirror (SESAM) to achieve fiber laser mode-locked ultrafast pulse output. [0003] However, commercial SESAMs are not suitable for all-round research on the dynamics of ultrafast fiber lasers due to their high price, complex ma...

Claims

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Application Information

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IPC IPC(8): H01S3/11H01S3/067
CPCH01S3/1118H01S3/067
Inventor 闫培光陈浩邢凤飞
Owner SHENZHEN UNIV
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