Laser cathode fixing device
A cathode fixing and laser technology, which is applied in the field of lasers, can solve the problems of high-precision size and difficulty in ensuring the position accuracy of the discharge tube, and achieve the effects of convenient installation and adjustment, simple structure, and guaranteed position accuracy
Inactive Publication Date: 2008-02-20
武汉海通激光技术有限公司
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Problems solved by technology
The return air glass tube is a complex five-way, six-way, or even 10-way structure, which can usually only be manufactured by hand, and it is difficult to ensure high-precision dimensions
When the air return tube causes radial displacement at the large hole end of the cathode due to insufficient precision, the discharge tube will also produce radial displacement, making it difficult to guarantee the position accuracy of the discharge tube
Method used
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[0013] Referring to Fig. 1 to Fig. 3, the present invention comprises cathode 1, cathode support 2, discharge tube 3, gas return glass tube 4, the aperture of described cathode 1 and discharge tube are connected coaxially through O-ring 5, cathode 1 The end of the large hole is connected to the air return glass tube 4 through an O-ring 6 to ensure airtightness. The outer surface of the small hole end of the cathode 1 is a convex spherical surface 9, which matches the concave spherical surface hole in the cathode support 2, and the cathode support 2 is fixed in the stable optical bridge 7 with screws. The concave spherical surface hole in the cathode support 2 can be formed by splicing two parts, and the two parts are connected by screws 8 .
[0014] The present invention can maintain the spatial precision of the discharge tube 3 when the precision error of the return gas glass tube 4 is large, as shown in FIG. 4 . When the large hole end of the cathode 1 produces radial displ...
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This invention relates to a kind of laser cathode fixing apparatus. It concludes the cathode supporting, discharge tube and back-gas glass tube. The small pore end of the said cathode is coaxially connected with discharge tube. The big pore end of cathode connects to the back-gas glass tube. The character is that the small pore outer surface of the said cathode is convex, which matches the concave pore of the cathode supporting. The cathode supporting is fixed in the photo-bridge. When the bid pore end of cathode has radial displacement because of low-accuracy of the back-gas tube, the cathode can rotate in the supporting. As sphere center and discharge tube center are superposed, the discharge tube can not have radial displacement. Thus, it ensures the position accuracy of discharge tube. It is unable to generate additional force which will make the supporting deformed.
Description
technical field [0001] The invention relates to a laser, in particular to a laser cathode fixing device. Background technique [0002] In longitudinal flow CO2 lasers, the discharge glass tube and the optical path through which the laser passes must be strictly coaxial, otherwise it will cause a decrease in laser efficiency or a decrease in beam quality, and in severe cases, the diffracted laser will burn the glass tube and other parts near the optical path. The return gas glass tube is a complex five-way, six-way, or even ten-way structure, which can only be manufactured by hand, and it is difficult to ensure high-precision dimensions. When the large hole end of the cathode produces radial displacement due to insufficient precision of the air return tube, the discharge tube will also produce radial displacement, making it difficult to guarantee the position accuracy of the discharge tube. At the same time, additional force will be generated on the support to cause stress d...
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IPC IPC(8): H01S3/02H01S3/038
Inventor 杨扬赵侠李适民
Owner 武汉海通激光技术有限公司