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Method for inhibiting amplified spontaneous emission of large-size sheet laser neodymium glass

A technology for amplifying spontaneous emission and flake laser, which is applied in the field of suppressing large-size laser neodymium glass amplified spontaneous emission and parasitic oscillation, and suppressing large-size flake laser neodymium glass amplified spontaneous emission, which can solve the problem of large residual reflectivity and low yield. , limit application and other issues, to achieve the effect of small additional stress, easy operation, and reduction of laser damage and thermal damage

Active Publication Date: 2011-11-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has disadvantages such as low yield, high cost, high risk, and large residual reflectivity, which limit the application of the above method on large-scale laser neodymium glass

Method used

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  • Method for inhibiting amplified spontaneous emission of large-size sheet laser neodymium glass
  • Method for inhibiting amplified spontaneous emission of large-size sheet laser neodymium glass
  • Method for inhibiting amplified spontaneous emission of large-size sheet laser neodymium glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1, the method for suppressing and amplifying spontaneous emission of quadrilateral sheet laser neodymium glass,

[0064] see Figure 1 to Figure 5 , figure 1 It is a schematic diagram of the arrangement of the long sides of the sheet-shaped laser neodymium glass and the absorbing glass strips in Example 1 of the present invention. figure 2 It is a schematic diagram of pasting the long side of the sheet-shaped laser neodymium glass and the absorbing glass slats in Example 1 of the present invention. image 3 It is a schematic diagram of the arrangement of the short sides of the sheet-shaped laser neodymium glass and the absorbing glass slabs in Embodiment 1 of the present invention. Figure 4 It is a schematic diagram of pasting the long side of the sheet-shaped laser neodymium glass and the absorbing glass slats in Example 1 of the present invention. Figure 5 It is a schematic diagram of the structure of the sheet-shaped laser neodymium glass according t...

Embodiment 2

[0080] The shape and implementation steps of this embodiment are the same as embodiment 1, the difference is:

[0081] The absorption glass is phosphate glass doped with copper oxide, and the weight percentage of the absorption glass doped with copper oxide is 0.5%.

[0082] The external dimensions of the absorbing glass slabs are 2 mm or more longer in the longitudinal direction than the sides of the laser neodymium glass, and the width direction of the absorbing glass is 1 mm or more wider than the thickness of the laser neodymium glass. The optical plane is treated with an acid solution, moved to a clean room for coupling treatment, cleaned and dried, and ready for operation. The organic adhesive is treated by suction filtration under reduced pressure to remove fine solid matter in the organic adhesive. The said absorbing glass is tightly bonded to the side of said laser neodymium glass by using said organic adhesive. Controlling the thickness of the organic adhesive laye...

Embodiment 3

[0085] Example 3: Method for Suppressing Amplified Spontaneous Emission by Octagonal Sheet Laser Neodymium Glass

[0086] see Figure 6 to Figure 9 , Figure 6 It is a schematic diagram of arrangement of octagonal sheet-shaped laser neodymium glass with four hypotenuses and absorbing glass slats in Embodiment 3. Figure 7 It is a structural schematic diagram of the four hypotenuses of the octagonal sheet-shaped laser neodymium glass and the absorbing glass slats of the third embodiment. Figure 8 It is a schematic diagram of the arrangement of octagonal sheet-shaped laser neodymium glass with four straight sides and absorbing glass slats in Embodiment 3. Figure 9 It is a structural schematic diagram of octagonal sheet laser neodymium glass in Example 3 after shape shaping and precise polishing of the light-transmitting surface.

[0087] Select the absorbing glass and organic adhesive that match the laser neodymium glass, the same as in Example 1. The weight percent of the a...

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Abstract

The invention relates to a method for inhibiting the amplified spontaneous emission of large-size sheet laser neodymium glass, which comprises the following steps of: (1) selecting absorbing glass matched with the sheet laser neodymium glass and an organic adhesive; (2) processing and adhering the sheet laser neodymium glass and an absorbing glass strip; (3) precisely polishing a light pass surface of the sheet laser neodymium glass, and the like. The method can effectively inhibit the amplified spontaneous emission and parasitic oscillation of the large-size sheet laser neodymium glass; gainperformance approximates the theoretical calculation level; and the glass has high stability and meets the using requirement of a high-power laser device.

Description

technical field [0001] The invention relates to solid-state lasers, in particular to a method for suppressing amplified spontaneous emission (Amplified Spontaneous Emission, referred to as ASE) of large-scale laser neodymium glass, more precisely, a method for suppressing amplified spontaneous emission of large-scale laser neodymium glass and parasitic oscillation methods. Background technique [0002] The condition for the formation of parasitic oscillation is R·e Dβ ≥1, where R is the boundary reflectivity, β is the gain coefficient, and D is the long-axis diameter of the laser neodymium glass sheet. As Dβ increases, parasitic oscillation and amplified spontaneous emission (ASE) are prone to occur, resulting in the inversion of the number of particles The escape and reduction of Δn reduces the laser neodymium glass gain. Parasitic oscillations are divided into two modes: [0003] Bulk parasitic mode, propagating as a sawtooth wave in parallel flat-plate laser Nd-glass; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/08H01S3/10
Inventor 孟涛唐景平胡俊江温磊陈力陈伟胡丽丽
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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