Elastic stressing stress birefringence double-frequency laser

A stress birefringence, dual-frequency laser technology, applied in the field of helium-neon lasers, can solve the problems of difficulty in improving the resolution of the frequency difference of the laser, and cannot guarantee firm fixation, etc., and achieves the effect of improving the resolution of the afterburner and improving the control accuracy.

Inactive Publication Date: 2006-05-17
TSINGHUA UNIV
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  • Application Information

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Problems solved by technology

Therefore, the resolution of the afterburner, that is, the frequency difference resolution of the formed laser is difficult to improve
At the same time, when the frequency difference is several MHz, the added force is about 1 kg (there is a certain change according to the size of the stress element and the installation method), such a small force cannot ensure the firm fixation between the stress elements of the screw
Even the two-dimensional afterburner in the above patent cannot completely solve this problem

Method used

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  • Elastic stressing stress birefringence double-frequency laser
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  • Elastic stressing stress birefringence double-frequency laser

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Embodiment Construction

[0020] figure 1 It is an embodiment of applying force to the stress element on the He-Ne laser, and the force is applied to the center of the element from two directions along a vertical line of the entire element. figure 2 It is an embodiment of lateral force on the boss on the stress element on the He-Ne laser. The boss on the element is actually obtained by processing a groove on an optical element. image 3 is the plan view of the force-bearing element.

[0021] figure 1 The middle element 1 is a helium-neon laser discharge tube. Element 2 is a mirror for the laser. Element 3 is the tube neck. 4 is a laser reflector, and 2 is a laser resonator. For example, the laser is a semi-external cavity structure, 4 is an anti-reflection window, 7 is another laser cavity mirror, and 2 forms a laser resonator. The dotted line indicates that the laser is not used for the whole inner cavity, and this component is used for the half outer cavity. 8 and 9 are a pair of bar-shaped p...

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Abstract

A stress double ¿C refraction double frequency laser with elastic loading is composed of He ¿C Ne laser tube, a pair of laser reflectors, stress double ¿C refraction element, permanent magnet block and elastic force loading mechanism. It features that elastic force loading mechanism is fixed on laser tube and it includes elastic force clamp fixed on anti ¿C reflector and reflector of laser, and stress element with groove for loading force on projection of clear surface.

Description

Technical field: [0001] The invention relates to the technical field of helium-neon lasers. Background technique: [0002] Stress birefringence-Zeman dual frequency laser. The existing stress birefringence-Zeman dual-frequency laser mainly consists of a HeNe laser (or discharge tube), a stress birefringent element placed in the HeNe laser (or discharge tube) and a laser placed on the HeNe laser (or discharge tube) magnetic field composition. The magnetic field is formed by a pair of permanent magnet bars with a strength of tens to 200 gauss. The stress birefringence element divides one frequency of the laser into two, and the interval between the two frequencies varies with the stress of the stress birefringence element. The function of the magnetic field is to make the Zeeman effect appear in the HeNe medium, weaken the mode competition of the above two frequencies, and make them oscillate stably together. When the stress birefringence causes the output frequency differ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/02H01S3/00H01S3/03H01S3/08H01S3/223
Inventor 张书练周鲁飞
Owner TSINGHUA UNIV
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