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Reshaping device for semiconductor laser diode array pumping

A laser diode and shaping device technology, applied in the direction of semiconductor lasers, lasers, laser components, etc., to achieve the effect of focusing position

Inactive Publication Date: 2011-05-04
BEIJING GK LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The semiconductor laser diode array shaped by the device can arbitrarily adjust the divergence angle of the output pump beam while increasing the pump energy density; and solve the problem of multiple laser diode array pumping of rod-shaped, strip-shaped and other long-length working material lasers. question

Method used

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  • Reshaping device for semiconductor laser diode array pumping
  • Reshaping device for semiconductor laser diode array pumping
  • Reshaping device for semiconductor laser diode array pumping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] refer to figure 1 , make a shaping device for semiconductor laser diode array pumping according to the present invention. Two laser diode arrays 1 are used in the device, and the two laser diode arrays 1 are symmetrically placed on both sides of the reflective structure 2. Each array It includes 16 laser diode bars 11 and the same number of optical fibers 12; the light emitting lines of each laser diode bar 11 in the laser diode array 1 are parallel to each other and form a rectangular light emitting surface. The laser diode array 1 is composed of the 16 laser diode bars fixed on one side of the appendage 13, wherein the appendage 13 is a square metal block (as shown in Fig. 2 (a) and Fig. 2 ( As shown in b), and the attachment 13 is provided with a power connection member; it can also be purchased from the market, for example, produced by the Changchun Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences.

[0046] The 16 optical fibers 12 are arra...

Embodiment 2

[0048] With reference to Fig. 3 (a) and Fig. 3 (b), make a shaping device for semiconductor laser diode array pumping of the present invention, use 8 laser diode arrays 1 in this device, and 8 laser diode arrays 1 are arranged in a circle Arranged around the reflection structure 2; each array includes 24 laser diode bars 11 and the same number of optical fibers 12. Wherein said laser diode array 1 is made up of said 24 laser diode bars fixed on the side surface of accessory 13, and wherein said accessory 13 is a rectangular copper metal block, and also in this rectangular copper metal block There is a channel for cooling water, and a water inlet and outlet are provided on the upper and lower end faces of the rectangular copper metal block, as well as a power connection member; the light-emitting lines of each laser diode bar in the array are parallel to each other and form a The illuminated face of the rectangle. The optical fiber axis and the corresponding light-emitting lin...

Embodiment 3

[0050] Make a shaping device for semiconductor laser diode array pumping of the present invention, use 18 laser diode arrays 1 produced by the Changchun Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences in this device, and each laser diode array 1 includes 8 laser diode bars strip 11, and the same number of optical fibers 12. The light emitting lines of each laser diode bar 11 in the array are parallel to each other and form a rectangular light emitting surface. The optical fiber axis and the corresponding light-emitting line of the laser diode bar 11 are arranged parallel to each other, with a distance between 0.1 mm and 1 mm. The direction of light emitted by the laser diode bar 11 is perpendicular to the optical fiber axis. The 18 arrays are divided into 9 groups, and the 9 groups of arrays are arranged around the reflective structure 2 in a rotationally symmetrical structure. The two arrays of each group are arranged in parallel with the side surfa...

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Abstract

The invention relates to a reshaping device for semiconductor laser diode array pumping. The reshaping device consists of at least one laser diode array or individual laser diode bars, optical fibers and a structural member for reflection. The structural member for reflection is a polygon with a circular or polygonal cross section, an upper top surface thereof is curve-shaped and smaller than a lower bottom surface and, and the center of the lower bottom surface is equipped with a light transmission area; the laser diode array or individual laser diode bar is arranged at one side of the structural member for reflection, the light-emitting surface of the laser diode bar or each laser diode array faces towards a lateral face of the structural member for reflection, and the light-emitting surface of each laser diode array or individual laser diode bar lies parallel to the lateral face of the structural member for reflection; and the number of optical fibers is equal to the number of laserdiode bars, and an optical fiber axis lies parallel to the corresponding light-emitting wires of the laser diode bar. The reshaping device for semiconductor laser diode array pumping has pumping coupling efficiency exceeding 90%, good light field uniformization, compact and firm structure, and low cost.

Description

technical field [0001] The invention relates to an optical shaping device, in particular to a shaping device applied to a high-power, high-energy all-solid-state laser pumping system. Background technique [0002] An ideal laser pump source usually includes the following conditions: (1) provide a high energy density, high uniformity laser beam (2) match the signal light beam well (3) maintain high transmission efficiency. In some high-energy laser systems, high pump energy is usually required, and the pump energy power of the bar can only be within a few hundred watts according to the current technological level. This leads to the need for the pumping system to use a large number of semiconductor laser diode bars to meet the pumping energy requirements. For a pumping system that requires thousands or tens of kilowatts of pumping energy, dozens or hundreds of bars are required. Considering the size of the current bar packaging structure, the total energy (laser) emission ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09H01S5/00
Inventor 樊仲维赵天卓崔建丰邱基斯麻云凤冯承勇
Owner BEIJING GK LASER TECH
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