A cathode lamp faraday anomalous dispersion atomic filter and its preparation method
An atomic optical filter and anomalous dispersion technology, applied in the field of atomic optical filtering technology, laser technology and optoelectronics, can solve the problems of inability to use iron atoms with high melting point, no direct photoresponse of laser, and few types of atoms, so as to achieve easy realization and Application, controllable optical signal intensity, and simple and easy-to-operate equipment
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[0039] Below in conjunction with accompanying drawing, further describe the present invention through embodiment, but do not limit the scope of the present invention in any way.
[0040] The present invention provides a method for making a cathode lamp Faraday anomalous dispersion atomic filter by using a hollow cathode lamp, and prepares a controllable narrow linewidth single-peak transmission spectrum atomic filter immune to external electromagnetic disturbances, figure 1 Schematic flow chart of its fabrication method. like figure 1 shown, including the following steps:
[0041] Step 101: Fix the hollow cathode lamp and connect the driving current source;
[0042] Step 102: According to the light filtering requirements, select permanent magnets or electromagnetic coils with appropriate magnetic field strength, and place them respectively at the front and rear ends of the hollow cathode lamp, and set the distance between the permanent magnets or electromagnetic coils;
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