China high the intersection of repetition frequency and high average power study and make important progress with the neodymium glass
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Will it be July 2010, Chinese Academy of Sciences the intersection of Shanghai and bare engine the intersection of moustache and high repetition frequency, high average power that beautiful beautiful seminar carry on study and make important progress with the neodymium glass. Its heat-resisting impact property can improve to N21, Model N31 laser neodymium glass to more than 4 times, the performance index reaches the about equal levels of three kinds of like products APG-1/HAP-4/Qx-Nd in world.
The development studying with the fusion of laser, is used for the laser driver device with certain repetition frequency in the generating station of thermonuclear reaction beginning to enter the research visual fields of various countries. Because of the requirement for repetition frequency, there are new requirements on thermomechanical performance index of the laser gain medium, foreign countries such as Japanese Osaka university HALNA (High Average-power laser for Nuclear FusiON Application) at present What the laser system is adopted is as HAP4 phosphate neodymium glass, it is thermomechanical to comment on factors LG-770 vitreous and about 4 times, can realize the average power 213W, frequency 10Hz and peaking generation 2.4GW (8.9ns) Output; And U.S.A. LLNL laboratory will used in the neodymium Glass Lasers system design of laser inertia fusion – disintegration energy in 2008. In addition utilize the laser device of neodymium glass with heat-resisting toughness of the great to have much application in industry and medical respect.
High repetition frequency, high average power use the neodymium glass, have lower linear expansion coefficient, thermal conductivity of great, suitable for applying in energy or power device of repetition frequency. The neodymium glass NAP2, NAP4 of new laser of bare engine of Shanghai is on the basis of guaranteeing better laser activity, for having N21, Model N31 laser neodymium glass now, its thermal expansion coefficient has been reduced by 30-40%, the thermal conductivity has been raised by 40-50%, therefore its whole heat-resisting impact property has been improved by 1.6-2.5 times. In addition, this type laser neodymium glass can adopt surface chemistry to strengthen subsequent processing because of the particularity of the component, its heat-resisting impact property can be improved by more than 2 times again. Therefore, can improve to N21, Model N31 laser neodymium glass to more than 4 times through its heat-resisting impact property of neodymium glass of enhanced new laser of surface modification.
Shanghai bare engine high repetition frequency, high average power vitreous to succeed in developing, launch, study, offer the effective technological guarantee in field this China with neodymium.
Tags: Laser, Neodymium glass
