Optic fibre collimator of optical fibre laser
A fiber collimator, fiber laser technology, applied in lasers, laser parts, semiconductor lasers, etc., can solve the problems of difficult to guarantee accuracy, difficult adjustment, high cost, and achieve accurate and no deviation coupling, simple and compact structure, and installation. and easy to adjust effects
Inactive Publication Date: 2003-03-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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However, the slider requires high machining accuracy, high cost, large volume, and difficult adjustment. When the sliding distance is long, the accuracy is difficult to guarantee.
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[0011] Such as figure 1 structure shown.
[0012] The wavelength of visible light emitted by the semiconductor laser diode 1 is 660nm, the focusing lens 2 is made of glass, the focal length f=5-6mm, the length of the collimating optical fiber 3 is 60-80cm, and the wavelength of the pumping light emitted by the pumping light source is 975nm. Or 915nm, which is invisible.
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An optical fibre collimator of optical fibre laser device is composed of casing and the semiconductor laser diode and focusing lens, which are coaxially arranged in the casing. The visual light is focused and coupled to the collimating optical fibre by said focusing lens, and then coupled into laser working optical fibre. The relative position of said both optical fibres is observed at output end and then regulated. After the collimating optical fibre is removed, a pump source is connected. Its advantages are simple process and high regualtion accuracy.
Description
Technical field: [0001] The invention relates to a fiber collimator of a fiber laser, in particular to the collimation used for the end face coupling of fiber to fiber. Background technique: [0002] In the fiber laser, it is necessary to couple the pump light from the output end face of the fiber to the end face of the working fiber of the fiber laser through optical fiber transmission. If the pump light source is an infrared fiber laser, the output pump light is invisible light, which is very difficult to adjust. It is difficult to accurately focus the pump light to the center of another laser working fiber, which will cause the loss of pump light and reduce the pump efficiency. If the pump light is focused on the edge of another working fiber, it may also pollute the end face of the fiber because the outer cladding of the fiber is burned by the pump light, which brings inconvenience to the actual operation. [0003] In the prior art, the fiber laser collimation is to put...
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IPC IPC(8): G02B6/32G02B27/30H01S5/00
Inventor 楼祺洪董景星周军魏运荣
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI