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A polyphenylphosphonium single crystal optical fiber and its preparation method and application

A technology of polyphenylphosphonium and polyphenylphosphonium salts, which is applied in the directions of single crystal growth, single crystal growth, polycrystalline material growth, etc., can solve the problems of low melting point and easy decomposition of organic crystals, and achieve smooth and stretchable surfaces. High intensity, high success rate effect

Active Publication Date: 2021-11-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the widely used single crystal fiber growth preparation technologies mainly include micro-pull down and laser heating susceptor, but these two methods are only suitable for the growth of inorganic single crystal fiber with high melting point.
However, organic crystals have a low melting point and are easy to decompose under high temperature conditions, so they are not suitable for the preparation of single crystal optical fibers by fusion pulling or micro-drawing growth.

Method used

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  • A polyphenylphosphonium single crystal optical fiber and its preparation method and application
  • A polyphenylphosphonium single crystal optical fiber and its preparation method and application
  • A polyphenylphosphonium single crystal optical fiber and its preparation method and application

Examples

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Effect test

Embodiment 1

[0039] A preparation method of tetraphenylphosphonium bromide single crystal optical fiber, comprising the following steps:

[0040] (1) Add tetraphenylphosphonium bromide (TPPBr) into ultrapure water, heat at 60° C. for 60 minutes, seal and heat to dissolve, and obtain a clear tetraphenylphosphonium bromide (TPPBr) solution with a mass fraction of 2.44%;

[0041] (2) The tetraphenylphosphonium bromide (TPPBr) solution obtained in step (1) was overheated at 80°C for 48 hours, filtered through a 0.22 μm ultrafine water film into the growth tank to obtain tetraphenylphosphonium bromide (TPPBr) ) supersaturated solution;

[0042] (3) Naturally cool the tetraphenylphosphonium bromide (TPPBr) supersaturated solution obtained in step (2) to 25°C, and then put a TPPBr seed with a diameter of 5 μm and an aspect ratio of 50:1 into the supersaturated solution. The crystal was grown in a sealed growth tank for 5 hours. During the growth process, the growth temperature of the growth tank...

Embodiment 2

[0049] A preparation method of a tetraphenylphosphonium bromide single crystal optical fiber is as described in Example 1, except that the mass fraction of the tetraphenylphosphonium bromide solution is 2.67%, and the growth time is 5 hours.

[0050] The tetraphenylphosphonium bromide (TPPBr) single crystal optical fiber prepared in this embodiment has an average growth rate of 0.5 μm / s, a diameter of 5 μm, and a length of 9 mm, and has the performance of frequency conversion.

Embodiment 3

[0052] A preparation method of a tetraphenylphosphonium bromide single crystal optical fiber is as described in Example 1, except that the mass fraction of the tetraphenylphosphonium bromide solution is 3.15%, and the growth time is 2 hours.

[0053] The tetraphenylphosphonium bromide (TPPBr) single crystal optical fiber prepared in this embodiment has an average growth rate of 1.2 μm / s, a diameter of 5 μm, and a length of 8.6 mm.

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Abstract

The invention relates to a polyphenylphosphonium single crystal optical fiber and its preparation method and application. The chemical composition of the polyphenylphosphonium single crystal optical fiber is tetraphenylphosphonium halide or tetraphenylphosphonium halide hydrate crystal, and the molecular formula of the polyphenylphosphonium single crystal optical fiber is C 24 h 20 PX·nH 2 O, where X is Cl, Br or I, n≥0, diameter is 1-50 μm, aspect ratio ≥500:1. The invention adopts the next growth method for the first time to prepare polyphenylphosphonium single crystal optical fiber. Compared with the prior art, the method of the present invention can control the diameter of the optical fiber within the range of 1-50 μm, and the prepared polyphenylphosphonium single crystal optical fiber has a large aspect ratio and specific surface area, and the diameter of the optical fiber is controllable. The surface is smooth, the optical fiber is high in quality, small in size, good in light guiding and high in tensile strength, and can be applied to the preparation of stimulated Raman scattering, nonlinear frequency conversion and optical waveguide devices.

Description

technical field [0001] The invention relates to a polyphenylphosphonium single-crystal optical fiber and its preparation method and application, belonging to the technical field of crystal materials. Background technique [0002] Single crystal fiber is a low-dimensional optical material with excellent performance. Unlike large-scale bulk crystals, it can confine the coupled laser light in a micron-sized volume, effectively increase the power density of pump light, and reduce the threshold of signal output. , improve laser conversion efficiency. Compared with glass optical fiber, single crystal optical fiber maintains the essential characteristics of single crystal, and has crystal physical properties such as nonlinear frequency conversion, Raman scattering, electro-optic effect, etc., so it is widely used in micro-devices in the fields of optoelectronics, optical communication, and superconducting technology preparation. [0003] So far, the single crystal optical fibers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/54C30B7/08
CPCC30B7/08C30B29/54
Inventor 任燕高泽玉张承乾
Owner SHANDONG UNIV