Cyclic air-exhausting method for obtaining high-purity terahertz working substance and optical maser

A working substance, terahertz technology, applied in the terahertz field, can solve the problems of increasing the difficulty and cost of the lens process, increasing the attenuation of pump light and signal light, etc., and achieve the effects of reducing mechanical strength requirements, optimizing purity, and high-efficiency purity

Active Publication Date: 2014-07-23
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thirdly, the high vacuum pressure that the terahertz working chamber has to withstand is also quite large, which has high requirements on the compressive strength of the window lens, which increases the process difficulty and cost of lens production, and the thicker optical lens will increase Attenuation of pump light and signal light

Method used

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  • Cyclic air-exhausting method for obtaining high-purity terahertz working substance and optical maser
  • Cyclic air-exhausting method for obtaining high-purity terahertz working substance and optical maser
  • Cyclic air-exhausting method for obtaining high-purity terahertz working substance and optical maser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Embodiment 1, a laser for obtaining a high-purity terahertz working substance by cyclic pumping, including a pump source 1, a terahertz sealed cavity 9, an input mirror 3, and an output mirror 13; the terahertz sealed cavity 9 and the input mirror 3, the output The mirror 13 constitutes a laser resonant cavity; the front end of the terahertz sealed cavity is provided with an input window 2, and the rear end is provided with an output window 14; the side of the terahertz sealed cavity is provided with a working substance input terminal 7, a capacitance film vacuum gauge 8, and a vacuum pump connection port 12; a vacuum pump 10 The vacuum pump connection port 12 is connected to the terahertz sealed cavity, and the vacuum pump manual valve 11 is set at the connection; the working substance container 4 is connected to the terahertz sealed cavity 9 through the working substance input port 7, and the working substance manual valve 6 and high vacuum micrometer are set at the conn...

Embodiment 2

[0053] Embodiment 2 is basically the same as Embodiment 1, except that the output mirror 13 as the output coupling end of the terahertz laser is a quartz gold-plated or silver-plated mirror, and there is an uncoated part for coupling output in the middle, with a diameter of 11 mm and an edge opening of 3 mm. A vent hole with a diameter of 3mm, this solution is more convenient for the adjustment of the laser.

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Abstract

The invention discloses a cycle pumping method. All valves are closed, and the terahertz sealed cavity is vacuumed. When the pump is saturated, the working gas is allowed to enter the terahertz cavity. The above steps are more than three times, and finally the working substance is filled to the required pressure to obtain a terahertz sealed cavity environment containing a high-purity working substance. The terahertz laser realized by this method includes a pump source, a terahertz sealed cavity, an input mirror, and an output mirror; the terahertz sealed cavity, the input mirror, and the output mirror form a laser resonator; the side of the terahertz sealed cavity is provided with a working substance input port , capacitive film vacuum gauge, vacuum pump connection port; the vacuum pump is connected to the terahertz sealed cavity, and a vacuum pump manual valve is set at the connection; the working substance container is connected to the terahertz sealed cavity, and the working substance manual valve and high vacuum micro-adjustment valve are set at the connection. The invention can realize the high-purity terahertz gas cavity at low cost and improve the performance of the laser.

Description

technical field [0001] The invention relates to a method for obtaining a high-purity terahertz working substance and a laser realized by applying the method, in particular to a method for obtaining a high-purity terahertz working substance based on cyclic pumping and a laser device realized by applying the method, belonging to the Hertz technology field. Background technique [0002] Optically pumped terahertz lasers generate terahertz radiation by pumping gas working substances with infrared lasers. It has high power, good mode, and continuous and stable output, so it has become a wonderful flower among many terahertz radiation sources. Researching this method has important theoretical significance and practical application value. In the research of people trying to increase the output power of optically pumped terahertz lasers, improving the purity of terahertz working substances is an important optimization parameter. [0003] At present, the method used by researchers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/036H01S3/03
Inventor 张玉萍刘蒙张会云张晓
Owner SHANDONG UNIV OF SCI & TECH
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