Laser module

A technology of optical modules and lasers, which is applied in the field of optical modules, can solve problems such as performance degradation and increased heat generation of optical modules, and achieve the effects of improving alignment accuracy and suppressing light loss

Pending Publication Date: 2015-07-08
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned optical module, if the optical loss in the laser resonator constituting the solid-state laser element increases, the heat generation of the optical module increases and the performance decreases.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] figure 1 It is a perspective view schematically showing an example of the optical module of the present invention. The optical module 50 shown in this figure includes: a base 30A divided into three blocks of a first block 1 , a second block 10 , and a third block 20 ; and a substrate 40 .

[0028] A thin plate-shaped stress buffering member 3 is fixed to the upper surface 1a of the first block 1 with a bonding material (not shown). The heat sink 5 is fixed on the stress buffering member 3 with a bonding material (not shown), and the laser medium 7 is fixed and mounted on the heat sink 5 with a bonding material (not shown). The first block 1 is a plate-shaped member having two side surfaces perpendicular to the optical axis of the laser medium 7, and is made of, for example, a metal material or an alloy material. The stress buffering member 3 relieves thermal stress caused by the difference in linear expansion coefficient between the first block 1 and the heat sink 5 ....

Embodiment approach 2

[0045] The optical module of the present invention can also form multiple emitters. When forming a plurality of emitters, for example, a first block on which a laser medium having a plurality of optical waveguides is mounted on an upper surface, a second block on which a plurality of excitation light sources are mounted on an upper surface, and The second of the third block of one wavelength conversion element on which a plurality of wavelength conversion elements or a plurality of optical waveguides are formed is fixed on the substrate, and the remaining two blocks are fixed on this block in a predetermined arrangement.

[0046] image 3 It is a perspective view schematically showing an example of an optical module in which a plurality of emitters are formed. The figure shows optical module 50A, except replacing the figure 1 The first block 1, the second block 10, and the third block 20 shown have the first block 1A, the second block 10A, and the third block 20A, and have t...

Embodiment approach 3

[0051] In the optical module of the present invention, a light guide that receives excitation light from an external light source and emits it to the laser medium side may be used as the excitation light source for the laser medium.

[0052] Figure 4 It is a perspective view schematically showing an example of an optical module having a light guide as an excitation light source of a laser medium. The optical module 150 shown in this figure, in addition to including the replacement figure 1 The second block 10 shown has a base 30B of the second block 110, and the bottom surface of the second block 110 is fixed on the substrate 40, and has the same figure 1 The light module 50 shown has the same structure. for Figure 4 Among the components shown are the figure 1 The same parts as the constituent parts shown are given the same figure 1 The same reference numerals as used in , and description thereof will be omitted.

[0053] A light guide 113 is fixed to the upper surface...

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Abstract

The invention discloses a laser module. When forming the laser module which comprises a substrate and a base plate, the substrate is divided into three blocks, wherein the substrate is used for carrying a solid laser element, an excitation laser source and a wave length converting element. The solid laser element is used for emitting fundamental wave lasers through oscillation, the excitation laser source is used for exciting the solid laser element, and the wave length converting element is used for converting the wave length of the fundamental wave lasers emitted by the solid laser element through oscillation. The base plate is used for supporting the substrate. The three blocks comprise the first block carrying a laser medium, the second block carrying the excitation laser source and the third block carrying the wave length converting element. The side face or the bottom face of only the second block is fixed to the base plate, the first block is fixed to the other side face of the second block, and the third block is fixed to the side face of the first block.

Description

[0001] This application is a divisional application with the application number 200880127788.5, the application date is March 18, 2008, and the invention name is "optical module". technical field [0002] The present invention relates to an optical module that converts fundamental laser light oscillated from a laser element into laser light of a predetermined wavelength by a wavelength conversion element and outputs the laser light. Background technique [0003] In order to obtain an optical module that oscillates a green laser with a wavelength of 530nm, in many cases, an infrared laser with a wavelength of 1060nm is used as the fundamental laser, and a wavelength conversion element is used to convert the wavelength of the fundamental laser. Therefore, an optical module that oscillates green laser light is generally composed of a solid-state laser element that oscillates fundamental-wave laser light, an excitation light source that excites the solid-state laser element, and ...

Claims

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Application Information

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IPC IPC(8): H01S3/02
Inventor 中村聪冈村将光福田圭一难波知世池田一贵
Owner MITSUBISHI ELECTRIC CORP
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