Preparation method for three-dimensional crystal optics echo wall micro-cavity
A technology of crystal optics and whispering gallery, used in laser welding equipment, manufacturing tools, welding equipment, etc., can solve the problem of unsuitable crystal, affecting the Q value of crystal microcavity, etc., achieve high quality factor, broaden the variety, improve roughness Effect
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[0024] The present invention will be further described below by examples and accompanying drawings, but the protection scope of the present invention should not be limited by this.
[0025] see first figure 1 , figure 1 It is a schematic flow chart of the method for preparing a three-dimensional crystal microcavity with a high quality factor by using a femtosecond laser in the present invention. Now, calcium fluoride crystal is used as an example to illustrate the method of the present invention. It can be seen from the figure that the present invention uses a femtosecond laser to prepare a crystal microcavity. method, including the following two steps:
[0026] 1) Femtosecond laser ablation:
[0027] The diameter of the small pillar is designed to be 40 μm, the diameter of the microdisk is 100 μm; the height of the small pillar is 20 μm, the thickness of the microdisk is 10 μm, and the maximum diameter of the laser ablation area is 180 μm;
[0028] Clean the upper and lowe...
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