Full-aperture harmonic-wave conversion efficiency measuring system and measuring method
A conversion efficiency and measurement system technology, applied in the fields of measurement, manufacturing, crystal growth, and assembly, can solve the problems of long time-consuming and high debugging costs, and achieve the effects of small space occupation, short measurement time, and compact optical path
Active Publication Date: 2018-09-25
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Due to the high cost of online measurement and debugging of frequency multiplication conversion efficiency, it takes a long time. Therefore, offline measurement of frequency multiplication conversion efficiency is the only means to achieve fast output of online triple frequency light. An important reference for output capabilities
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[0042] The present invention will be further described below in conjunction with embodiment and accompanying drawing.
[0043] refer to figure 1 with Figure 7 The shown full-aperture harmonic conversion efficiency measurement system and its measurement method, in which the components and optical path structure of the measurement system are roughly as follows figure 1 As shown, it includes a 1053nm laser 1 for generating 1053nm fundamental frequency laser, and a first mirror a erected on the optical path of the 1053nm laser 1, and a second mirror a is erected on the reflection optical path of the first mirror a B, the reflected light path of the second transflector b is provided with the first single-sided high-reflective mirror c, and the reflected light path of the first single-sided high-reflected mirror c is set with double-sided high-reflective mirror d, and the double-sided high-reflective mirror A polarizer 4 and a standard mirror i are set up on the reflected light p...
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The invention discloses a full-aperture harmonic-wave conversion efficiency measuring system and measuring method. The measuring system comprises a 1053 mm laser unit, a measuring light path which iserected along emergent laser of the laser unit, a frequency doubling crystal motion control device which is arranged on the measuring light path, a crystal autocollimator used for crystal collimatingand a laser autocollimator used for light path collimating, and at least four calorimeters used for measuring laser energy. The measuring method mainly adopts the measuring system and comprises the following steps: laser light path collimating, laser transmission coefficient calibrating, to-be-measured crystal collimating, to-be-measured second harmonic generation optimal matching position measuring, to-be-measured third harmonic generation crystal maximal conversion efficiency measuring, translation measuring and full-aperture third harmonic generation crystal maximal conversion efficiency measuring. With the adoption of the scheme, quick on-line measuring for frequency doubling conversion efficiency is realized; and moreover, the measuring system is compact in light path, is small in occupied space, is relatively low in cost, is high in measuring precision, is convenient and feasible in operation, and is time-saving and efficient.
Description
technical field [0001] The invention belongs to the technical fields of crystal growth, manufacture, assembly and measurement, and in particular relates to a full-aperture harmonic conversion efficiency measurement system and a measurement method thereof. Background technique [0002] In the field of laser fusion, it is usually necessary to convert the 1053nm fundamental frequency light into 527nm double frequency light with the help of double frequency crystal first, and then convert the 1053nm fundamental frequency light and 527nm double frequency light into 351nm triple frequency light by triple frequency crystal. For target shooting, such as NIF devices in the United States, LMJ devices in France, and SG devices in my country, etc., the conversion efficiency of the frequency-doubling crystal determines the output capability of the frequency-doubling light. Due to the high cost of online measurement and debugging of frequency multiplication conversion efficiency, it takes ...
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IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 徐旭叶朗独伟锋李珂魏春蓉贺群林春刚
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS