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Quadruplicated-frequency laser terminal optical system

An optical system, quadruple frequency technology, used in lasers, laser parts, phonon exciters, etc., to reduce the number and thickness, improve the utilization rate, and alleviate the risk of UV damage

Active Publication Date: 2015-04-22
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0003] The present invention aims at the defects existing in the current triple frequency laser terminal optical system, and provides a quadruple frequency laser terminal optical system capable of outputting high-energy quadruple frequency laser and alleviating serious damage in the ultraviolet section

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0022] Such as figure 1 As shown, a quadruple frequency laser terminal optical system includes: fundamental frequency light source, double frequency crystal 1, fundamental frequency absorbing glass 2, focusing lens 3, vacuum window 4, quadruple frequency crystal 5, shielding sheet 6 and temperature control system.

[0023] Double frequency crystal 1 is located downstream of the optical path of the fundamental frequency light source, focusing lens 3 is located downstream of the optical path of double frequency crystal 1, quadruple frequency crystal 5 is located downstream of the optical path of focusing lens 3, and fundamental frequency absorbing glass 2 is located on the optical path of double frequency crystal 1 Between the focusing lens 3 and the vacuum window 4 is located...

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Abstract

The invention discloses a quadruplicated-frequency laser terminal optical system. The quadruplicated-frequency laser terminal optical system comprises a doubled-frequency crystal, base-frequency absorption glass, a focusing lens, a vacuum window, a quadruplicated-frequency crystal and a shield sheet. According to the system, the characteristic that the noncritical phase matching technology is insensitive to a beam-divergence angle is utilized, and the quadruplicated-frequency crystal is arranged behind the focusing lens, so that the conversion efficiency of quadruplicated-frequency laser cannot be influenced, the quantity and the thickness of optical elements in the ultraviolet band are reduced, and accordingly, serious damage of the optical elements in the ultraviolet band is relieved. Doubled-frequency laser and quadruplicated-frequency laser which are output by the quadruplicated-frequency laser terminal optical system are strictly confocal, so that mixed target shooting of two-wavelength laser is provided and the utilization ratio of the base-frequency laser energy is improved.

Description

technical field [0001] The invention belongs to the field of high-power laser systems, and in particular relates to a high-energy quadruple-frequency laser terminal optical system applied to high-power laser drivers. Background technique [0002] Inertial Confinement Fusion (ICF) is one of the effective ways to realize controllable thermonuclear fusion, and all major countries in the world are actively carrying out related research. At present, there are many large-scale laser devices that have been built or are being built for ICF research, such as the NIF device in the United States, the LMJ device in France, and the Shenguang series devices in China. Because the neodymium glass laser has the characteristics of high output power and easy control, most devices are designed based on the neodymium glass laser. In order to suppress the laser plasma instability (Laser Plasam Instablity, LPI) problem during the shooting process, it is necessary to convert the frequency of the n...

Claims

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Application Information

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IPC IPC(8): H01S3/109
Inventor 李富全王芳韩伟王伟李平冯斌向勇张小民魏晓峰景峰粟敬钦赵润昌周丽丹王礼权朱启华郑奎兴胡东霞
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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