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Iron-doped zinc selenide saturable absorber mirror, manufacturing method thereof, and mold-locked fiber laser composed of iron-doped zinc selenide saturable absorber mirror

A saturable absorption and zinc selenide technology, applied in the laser field, can solve the problem of low light damage threshold, achieve simple preparation process, high reliability, and reduce light scattering

Inactive Publication Date: 2016-11-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an iron-doped zinc selenide saturable absorber mirror with a relatively high light damage threshold for the current problem of low light damage threshold of saturable absorbers;

Method used

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  • Iron-doped zinc selenide saturable absorber mirror, manufacturing method thereof, and mold-locked fiber laser composed of iron-doped zinc selenide saturable absorber mirror
  • Iron-doped zinc selenide saturable absorber mirror, manufacturing method thereof, and mold-locked fiber laser composed of iron-doped zinc selenide saturable absorber mirror
  • Iron-doped zinc selenide saturable absorber mirror, manufacturing method thereof, and mold-locked fiber laser composed of iron-doped zinc selenide saturable absorber mirror

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this embodiment, the quartz glass is used as the substrate, and the iron-doped zinc selenide saturable absorption mirror is prepared by using the laser pulse deposition method (PLD), including the following steps: the substrate and the gold target are respectively placed in a PLD (Pulsed laser deposition, pulsed laser deposition system) ) on the substrate support and target support in the cavity, and vacuum the cavity to no more than 1×10 -4 Pa, then raise the temperature of the substrate holder in the cavity to 400°C, turn on the femtosecond laser, and set the peak power to 2×10 10 Under the action of W laser, deposit on the substrate for 40 minutes to obtain a gold film with a thickness of 300nm; then cool to room temperature with the furnace, and replace the gold target with Fe 2+ The concentration is 1×10 17 cm -3 iron-doped zinc selenide crystal target, and then vacuum the cavity to no more than 1×10 -4 Pa, then raise the temperature of the substrate holder i...

Embodiment 2

[0037] In this embodiment, the calcium fluoride crystal substrate is used as the substrate, and the iron-doped zinc selenide saturable absorption mirror is prepared by adopting the laser pulse deposition method (PLD), which includes the following steps: the substrate and the silver target are respectively placed in the PLD (Pulsed laser deposition, Pulse laser coating system) on the substrate support and target support in the cavity, vacuum the cavity to no more than 1×10 -4 Pa, then raise the temperature of the substrate holder in the cavity to 600°C, turn on the femtosecond laser, and set the peak power to 4×10 10 Under the action of W laser, deposit on the substrate for 25 minutes to obtain a silver film with a thickness of 400nm; then cool to room temperature with the furnace, and replace the silver target with Fe 2+ The concentration is 1×10 18 cm -3 Iron-doped zinc selenide crystal target, and then vacuum the cavity to no more than 1×10 -4 Pa, then raise the temperatu...

Embodiment 3

[0039] In this embodiment, the silicon carbide crystal substrate is used as the substrate, and the iron-doped zinc selenide saturable absorption mirror is prepared by adopting the laser pulse deposition method (PLD). Coating system) on the substrate support and target support in the cavity, vacuum the cavity to no more than 1×10 -4 Pa, then raise the temperature of the substrate holder in the cavity to 800°C, turn on the femtosecond laser, and set the peak power to 4×10 10 Under the action of W laser, deposit on the substrate for 25 minutes to obtain a gold film with a thickness of 400nm; then cool to room temperature with the furnace, and replace the gold target with Fe 2+ The concentration is 1×10 19 cm -3 iron-doped zinc selenide crystal target, and then vacuum the cavity to no more than 1×10 -4 Pa, then raise the temperature of the substrate holder in the cavity to 800°C, turn on the femtosecond laser, and set the peak power to 4×10 10 Under the action of W laser, depo...

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Abstract

The invention discloses an iron-doped zinc selenide saturable absorber mirror, a manufacturing method thereof, and a mold-locked fiber laser composed of the iron-doped zinc selenide saturable absorber mirror. The iron-doped zinc selenide saturable absorber mirror comprises a substrate, a high-reflectivity film plated on the substrate, and an iron-doped zinc selenide film plated on the high-reflectivity film. Due to the fact that iron-doped zinc selenide saturable absorber mirror adopts the iron-doped zinc selenide film as a saturable absorber, and the iron-doped zinc selenide film has a high damage threshold and can be applied to development of high-power lasers, the blank of lack of high-damage-threshold saturable absorber mirrors or high-damage-threshold saturable absorbers in the field is filled up. The mold-locked fiber laser formed on the basis of the iron-doped zinc selenide saturable absorber mirror obtains laser beams through double-cladding gain fibers, a locked mode is achieved by modulating the laser beams with the iron-doped zinc selenide saturable absorber mirror, and then ultra-short pulse laser beams are obtained.

Description

technical field [0001] The invention belongs to the field of laser technology and relates to ultrashort pulse laser technology, in particular to an iron-doped zinc selenide saturable absorption mirror and a mode-locked optical fiber laser prepared and formed thereof. Background technique [0002] In recent years, ultrashort pulse laser has attracted people because of its wide application prospects in the fields of atmospheric communication, environmental monitoring, ultrafast optics, fiber optic sensing, industrial processing, laser guidance, biomedicine, laser surgery, lidar and laser countermeasures. Great research interest. [0003] The common method to achieve ultrashort pulses is mode-locking technology, including active mode-locking, passive mode-locking and self-mode-locking, etc., in which both active mode-locking and passive mode-locking are achieved by setting a suitable nonlinear device in the laser resonator or externally It is realized by driving the optical mo...

Claims

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Application Information

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IPC IPC(8): H01S3/098
CPCH01S3/1118
Inventor 冯国英张涛兰斌张弘戴深宇周寿桓
Owner SICHUAN UNIV
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