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Laser composite wave appts.

A laser and laser technology, which is applied in the field of laser multiplexing devices, can solve the problems of difficult manufacturing and difficult manufacturing of redirection systems.

Inactive Publication Date: 2004-08-11
ADTEC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] As mentioned above, while the position of the redirecting system is fixed at a very small area where multiple beam waists are concentrated with high precision, it is necessary to make the redirecting system itself consistent with the shape of each beam at the above-mentioned focusing position, and to carry out a compact operation. Moreover, it is produced with high precision, and the manufacture of the redirection system is difficult
In addition, since the size of the beam waist is proportional to the wavelength, in recent years, with the shortening of the wavelength of the laser light source, the above-mentioned size has been reduced, and the high-precision fixing and miniaturization of the redirection system are more required, and the manufacturing difficulty is becoming more and more difficult.

Method used

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  • Laser composite wave appts.
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Examples

Experimental program
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Effect test

Embodiment 1-1

[0123] Fig. 1 is a schematic configuration diagram showing a laser combining device of the first example (hereinafter referred to as Example 1-1) in the first embodiment of the present invention, and Fig. 1(a) is a view of the above-mentioned laser combining device from above. The top view of the wave device, Fig. 1 (b) is the front view of the above-mentioned laser multiplexing device observed from the semiconductor laser arrangement direction, and Fig. 1 (c) is the left side view of the above-mentioned laser multiplexing device observed from the optical axis direction of the light beam. in addition, figure 2 It is a perspective view showing a state where a laser beam is emitted from an active layer of a semiconductor laser, image 3 It is a state diagram showing the structure of the focusing angle conversion optical system and the beams multiplexed in the optical fiber through the focusing angle conversion optical system, image 3 (a) is a plan view showing the structure o...

Embodiment 1-2

[0138] Hereinafter, a laser multiplexing device of a second example (hereinafter referred to as example 1-2) in the first embodiment of the present invention will be described. Figure 5 is a schematic configuration diagram showing the above-mentioned laser multiplexing device, Figure 5 (a) is a top view of the laser combining device observed from above, Figure 5 (b) is a top view of the laser multiplexing device observed from the direction in which the semiconductor lasers are arranged, Figure 5 (c) is a left side view of the laser multiplexing device observed from the optical axis direction of the beam, Image 6 is a functional diagram showing the deflection of light beams by individual lenses constituting the deflection lens, Image 6 (a) is a schematic diagram of the above-mentioned individual lens viewed with the Y direction as the upper side of the paper, Image 6 (b) is a schematic diagram of the above-mentioned individual lenses viewed with the X direction as the...

Embodiment 2-1

[0157] Figure 9 It is a schematic configuration diagram showing the laser multiplexing device 201 of the first example (hereinafter referred to as Example 2-1) in the second embodiment of the present invention, Figure 9 (a) is the plan view that observes above-mentioned laser multiplexing device from above, Figure 9 (b) is a front view of observing the above-mentioned laser multiplexing device from the laser arrangement direction, Figure 9 (c) is to observe above-mentioned laser multiplexing device figure from the optical axis direction of light beam, Figure 10 It is a diagram showing a state in which the focusing angle conversion optical system converges the optical axes of the respective light beams parallel to each other in the slow-axis direction view. Such as Figure 9 As shown, the laser multiplexing device 201 of the embodiment 2-1 includes the laser block 10, all the focusing optical systems 20, and the focusing angle conversion optical system 30C.

[0158] In...

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Abstract

The object of the present invention is to provide a compact and high output laser light coupler device. The solutions includes that each laser light beam La, Lb, Lc is emitted by a plurality of semiconductor laser 11A, 11B, 11C, passes a convergence lens 120, and is converged in the FAST axis. And light axis of each light beam La, Lb, Lc installs a convergence angle varying optical system 30 which is more upstream than the most upstream position Pa which is crossed position, looked in the FAST axis. The convergence angle varying optical system 30 makes convergence angle of the whole light beam which is made of each light beam La, Lb, Lc and which passes through a convergence-divergence optical system 120, become smaller convergence angle in the FAST axis, and makes the whole light beam emit into the core 41 of optical fiber 40.

Description

technical field [0001] The present invention relates to a laser multiplexing device, and more specifically, to a laser multiplexing device for converging all beams composed of laser beams emitted from a plurality of semiconductor lasers and incident on an optical fiber. Background technique [0002] Conventionally, each beam of laser light emitted by a plurality of semiconductor lasers arranged in one direction is passed through a collimator lens to become a parallel beam with mutually parallel optical axes arranged in one direction, so that the beams arranged side by side A method is well known in which all the light is collected, incident on a single optical fiber, and laser light having a high energy density is transmitted through the optical fiber (for example, Patent Document 1). [0003] In the above-mentioned method, the efficiency (coupling efficiency) when each beam of laser light emitted from a plurality of semiconductor lasers is combined into one optical fiber is...

Claims

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Application Information

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IPC IPC(8): G02B6/42G02B27/10G02B27/30H01S3/00H01S5/00
CPCE04B1/30E04C3/29E04C5/07
Inventor 山中英生冈崎洋二
Owner ADTEC ENG
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