China de­vel­ops high-power laser film for aero­nau­tics

Global Times US Edition - - CHINA - By Yin Han

China’s sci­en­tists achieved a mile­stone in laser fu­sion, long blocked by West­ern coun­tries, which could be used to in­crease the ef­fi­ciency of de­tec­tors in aero­nau­tics and as­tro­nau­tics.

This high-power laser film, de­vel­oped by a lab­o­ra­tory sup­ported by the Chi­nese Acad­emy of Sciences’ Shanghai In­sti­tute of Op­tics and Fine Mechanics, won first prize at an international com­pe­ti­tion be­cause of its high dam­age thresh­old, Sci­ence and Tech­nol­ogy Daily re­ported on Thurs­day.

The film’s dam­age thresh­old of the China-de­vel­oped film was 20 per­cent higher than the se­cond placer, the re­port said.

The high-power laser film is an in­dis­pens­able com­po­nent of a laser fu­sion de­vice or other in­tense laser sys­tems, and would be used for re­search in laser in­er­tial con­fine­ment fu­sion and in aero­nau­tics and as­tro­nau­tics, the re­port said.

The film can re-di­rect the high-power laser with­out weak­en­ing its power, and the dam­age thresh­old mea­sures the film’s abil­ity to guide the laser to its tar­get.

The film can bet­ter fo­cus the laser in one di­rec­tion with­out los­ing much power, which could “en­able de­tec­tors, com­mu­ni­ca­tion devices, and other laser-based devices to use lower en­ergy for a bet­ter ef­fect,” Wang Yanan, deputy ed­i­tor of Aero­space Knowl­edge magazine, told the Global Times on Thurs­day.

The re­port also noted that pre­par­ing the high-power laser film is com­plex and in­ter­dis­ci­plinary.

How­ever, it was blocked by West­ern coun­tries, with re­lated prod­ucts pre­vented from be­ing sent to China.

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