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Light-absorbing layer and joined body provided with light-absorbing layer

A light-absorbing layer and junction technology, which is applied in the field of junctions, can solve problems such as output reduction, achieve the effects of suppressing manufacturing costs and preventing parasitic oscillations

Pending Publication Date: 2021-04-13
JX NIPPON MINING & METALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When parasitic oscillation occurs, the output decreases compared to the laser beam predicted from the original resonator composed of opposing mirrors

Method used

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  • Light-absorbing layer and joined body provided with light-absorbing layer
  • Light-absorbing layer and joined body provided with light-absorbing layer

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Embodiment

[0044] Hereinafter, it demonstrates based on an Example and a comparative example. It should be noted that this embodiment is only an example and is not limited by this example. That is, the present invention is limited only by the claims, and includes various modifications other than the examples included in the present invention.

[0045] For reference, the characteristics of conventional Cr:YAG (cladding) are shown below. Cr:YAG has a melting point of 1970°C and an absorption coefficient of 3.5cm -1 (Wavelength: 650nm~1400nm), the refractive index is 1.82, and the thermal expansion rate is 7.8ppm / K. Furthermore, in the case of using Nd:YAG as a laser medium (refractive index: 1.82, thermal expansion coefficient: 8 ppm / K), the difference in refractive index is less than 0.01, and the difference in thermal expansion coefficient is almost zero.

[0046] (Example)

[0047] Titanium oxide, silicon oxide, sodium carbonate, and nickel oxide, which are raw materials for the gla...

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Abstract

A light-absorbing layer constitutes a bonded body by bonding to a laser medium, and is characterized in that the light-absorbing layer contains a glass material, the light-absorbing layer has an absorption coefficient of 0.1 cm-1 to 10.0 cm-1 at an oscillation wavelength (wavelength of 650 nm or more and less than 1400 nm) of the laser medium, the refractive index difference between the light absorption layer and the laser medium is within + / - 0.1, and the linear thermal expansion coefficient difference between the light absorption layer and the laser medium is within + / -1 ppm / K. The present invention addresses the problem of providing the light-absorbing layer for preventing parasitic oscillations, and a material which is capable of suppressing production costs and is easy to process for producing the bonded body.

Description

technical field [0001] The present invention relates to a light-absorbing layer constituting a bonded body by bonding with a laser medium and a bonded body having the light-absorbing layer, and more particularly to a light-absorbing layer suitable for preventing laser oscillation / amplifier parasitic oscillation and a bond having the light-absorbing layer body. Background technique [0002] Standard lasing is the application of excitation of a lasing medium as a phosphor and light amplification within a resonator sandwiched by optically opposing high-reflectivity mirrors. In addition, in addition to the case where the laser medium itself becomes an oscillation source, there are applications as an amplifier for amplifying the output of a laser beam generated from another medium. [0003] By the way, when designing for laser applications, you need to be aware of parasitic oscillations. The parasitic oscillation means that the end surface of the laser medium becomes a reflecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/04C03C4/08H01S3/06
CPCC03C4/08C03C3/04H01S2301/02H01S3/1643H01S3/1611H01S3/0941H01S3/0604H01S3/0612H01S3/0617H01S3/0625H01S3/16H01S3/17
Inventor 山崎芳树三上充
Owner JX NIPPON MINING & METALS CORP
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