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Novel liquid laser working substance and producing method thereof

A technology of laser working substances and liquids, which is applied in the field of optical materials, can solve problems such as damage to working substances, limit application fields, restrict reuse rate, use range, operation cycle and life, etc., and achieve the effect of high repetition rate

Inactive Publication Date: 2008-03-05
FUDAN UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the development of strong solid-state laser systems has also encountered difficulties and technical bottlenecks. First, the solid-state laser working material is prone to generate damage points during high-power operation. Once the damage points are generated, they will rapidly expand during high-power operation, eventually leading to The destruction of the entire working substance has become a serious natural bottleneck for the continuous increase of the operating power of the laser; second, there is no good cooling solution for the solid laser working substance in the solid-state laser, and it is difficult to fundamentally overcome the heat conduction during operation The problem, to a large extent, restricts its reuse rate, scope of use, operating cycle and life, which limits some application fields and keeps the operating cost high, failing to meet the requirements of large-scale commercialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] In a pyrex jar combine 3.0 x 10 -4 mol of Nd(NO 3 ) 3 with 7.5×10 -6 mol of polyvinylpyrrolidone (PVP) was dissolved in 8ml N,N-dimethylformamide (DMF), the reaction bottle was placed in the center of the microwave oven turntable, and under the irradiation condition of 200W, it was heated for 5 minutes to obtain the rare earth colloid solution. After cooling to room temperature, the centrifuged colloidal solution was washed, and then dried in a vacuum oven at 80°C for 12 hours to obtain a white powder. Dispersing this powder into heavy water in an anhydrous glove box can obtain the working substance of a liquid laser.

Embodiment 2

[0013] In a pyrex jar combine 3.0 x 10 -4 mol of Nd(NO 3 ) 3 with 7.5×10 -6 mol of polyvinylpyrrolidone (PVP) was dissolved in 8ml N,N-dimethylformamide (DMF), the reaction bottle was placed in the center of the microwave oven turntable, and under the irradiation condition of 300W, it was heated for 8 minutes to obtain the rare earth colloid solution. After cooling to room temperature, the centrifuged colloidal solution was washed, and then dried in a vacuum oven at 80°C for 12 hours to obtain a white powder. Dispersing this powder into heavy water in an anhydrous glove box can obtain the working substance of a liquid laser.

Embodiment 3

[0015] In a pyrex jar combine 3.0 x 10 -4 mol of Nd(NO 3 ) 3 with 9.0×10 -6 mol of polyvinylpyrrolidone (PVP) is dissolved in 8ml N,N-dimethylformamide (DMF), the reaction bottle is placed in the center of the microwave oven turntable, and under the irradiation condition of 400W, it is heated for 10 minutes to obtain the rare earth colloid solution. After cooling to room temperature, the centrifuged colloidal solution was washed, and then dried in a vacuum oven at 80°C for 12 hours to obtain a white powder. Disperse the powder into heavy water in an anhydrous glove box to obtain the working substance of the liquid laser.

[0016] The liquid laser working substances prepared in Examples 1-3 have good fluidity and thermal conductivity, and can be used as materials for preparing high repetition rate, high energy (high average power) lasers, and the prepared lasers are not prone to damage.

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PUM

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Abstract

The present invention belongs to the field of optical material technology, and is especially one new kind of liquid laser work substance and its preparation process. The preparation process includes preparing polymer modified nanometer RE material with neodymium nitrate and through a microwave process, and subsequent dispersing the polymer modified nanometer RE material inside liquid of boiling point higher than 100 deg.c to obtain the new kind of liquid laser work substance. Compared with traditional solid laser material, the liquid with flowability has greatly raised heat conducting performance and less temperature gradient problem, and may be used in making laser with less damage and excellent optical performance. Therefore, the material of the present invention may be used as candidate material for laser with high repeat frequency and high energy.

Description

technical field [0001] The invention belongs to the technical field of optical materials, and in particular relates to a novel liquid laser working substance and a preparation method thereof. technical background [0002] The high-repetition super-intensive laser system is not only the hope of new energy sources for human beings in the future, but also has high strategic significance in national defense. For example, research on laser nuclear fusion and laser weapons requires high-repetition super-intense lasers, such as the 192 beams that the United States is building , 1.8 MJ pulse energy National Ignition Facility (NIF). If you fall behind, you will be beaten, and its importance is self-evident. High-repetition, high-power lasers are one of the major development directions of laser technology, and have been suggested to be included in the national science and technology medium and long-term development plan in my country. The 60-beam, 100KJ Shenguang-III host giant devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/20C08L39/06
Inventor 彭波余荣彪范忠诚黄维钱列加
Owner FUDAN UNIV
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