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Method for realizing laser glass edge covering by using ultrashort pulse laser

A technology of ultra-short pulse laser and laser glass, which is applied in glass forming, glass reshaping, glass manufacturing equipment, etc. It can solve the problems of low bonding strength, complex heat treatment process, shedding, etc. The effect of good rate matching and not easy to fall off

Pending Publication Date: 2021-11-02
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

The method of direct bonding and encapsulation requires a complex heat treatment process; the bonding and encapsulation process using inorganic adhesives is simple and will not introduce organic pollution sources into the pump chamber, but the bonding strength is lower than that of direct bonding and may fall off

Method used

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  • Method for realizing laser glass edge covering by using ultrashort pulse laser
  • Method for realizing laser glass edge covering by using ultrashort pulse laser

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Embodiment 1

[0036] refer to figure 1 A method for realizing laser glass edge wrapping by using an ultrashort pulse laser, comprising the following steps:

[0037] 1) According to the refractive index n of the laser glass 1 1 And the thermal expansion coefficient selects the edge glass 2: the thermal expansion coefficient difference between the edge glass 2 and the laser glass 1 is less than 2%, and the refractive index of the edge glass 2 and the laser glass 1 in the operating laser band are respectively n 2 , n 1 , both of which satisfy n 2 >n 1 , and the refractive index difference is less than 0.005.

[0038] 2) Processing the selected laser glass 1 and edge glass 2 . Grinding and polishing the side of the glass to be edged requires the overall finish to be grade 2, and the surface profile is better than λ / 3, where λ is the operating laser wavelength of laser glass 1. After the processing is completed, it is cleaned. Acetone and isopropanol are used as cleaning fluids to clean th...

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Abstract

The invention relates to a method for realizing laser glass edge covering by using ultrashort pulse laser, which comprises the steps of carrying out precision optical processing on a surface to be subjected to edge covering by using laser glass and edge covering glass matched with the laser glass in physical property, and cleaning; preliminarily bonding the laser glass and the edge covering glass, acting focused ultrashort pulse laser on a bonding surface, and enhancing bonding connection through different scanning patterns; and through specific annealing treatment, firming connecting the laser glass and the edge covering glass together with high quality. The method reduces the complexity of a direct bonding process, has the advantages of bonding and edge covering, is high in connection strength, is not liable to age and fall off under the irradiation of a strong xenon lamp, and can meet the requirements of suppressing amplified spontaneous emission and parasitic oscillation.

Description

technical field [0001] The invention relates to laser glass, in particular to a method for realizing laser glass edge encapsulation by using ultrashort pulse laser. Background technique [0002] In high-power laser drive devices, laser glass plays a central role as a gain medium for energy amplification. During the amplification process of the incident laser light, the spontaneous emission light is also amplified to generate amplified spontaneous emission (ASE). When the spontaneous emission light forms a closed oscillation inside or on the surface of the gain medium, a parasitic oscillation (PO) will be generated. ASE and PO not only reduce the energy storage of laser glass, but also cause the redistribution of energy storage inside the gain medium, affecting the gain uniformity. As the pump power increases, the adverse effects of ASE and PO on gain uniformity become more pronounced. In order to suppress the ASE and PO inside the laser glass, starting from eliminating or ...

Claims

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Application Information

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IPC IPC(8): C03B23/20C03B25/00C03C27/10
CPCC03B23/20C03C27/10C03B25/00
Inventor 冯滔王冰艳姜有恩周申蕾朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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