强激光与粒子束
彊激光與粒子束
강격광여입자속
HIGH POWER LASER AND PARTICLEBEAMS
2011年
10期
2589-2592
,共4页
高鹏鹏%晋云霞%刘世杰%汪剑鹏%陈顺利
高鵬鵬%晉雲霞%劉世傑%汪劍鵬%陳順利
고붕붕%진운하%류세걸%왕검붕%진순리
激光诱导损伤%多层介质膜光栅%激光预处理%抗激光损伤性%精密结构
激光誘導損傷%多層介質膜光柵%激光預處理%抗激光損傷性%精密結構
격광유도손상%다층개질막광책%격광예처리%항격광손상성%정밀결구
laser induced damage%multilayer dielectric gratings%laser-conditioning%damage resistance%fine structure
在N-on-1测试模式下研究了多层介质膜光栅的激光预处理效应.实验发现,激光预处理之后多层介质光栅膜的阈值能提高到处理前阈值的1.5～2.0倍.预处理机制可能是低能量密度激光辐照减少了光栅表面的污染物并降低了光栅表面的粗糙度.激光预处理可以作为优化光栅结构、酸洗等一系列提高多层介质膜光栅阈值方法的一个补充.
在N-on-1測試模式下研究瞭多層介質膜光柵的激光預處理效應.實驗髮現,激光預處理之後多層介質光柵膜的閾值能提高到處理前閾值的1.5～2.0倍.預處理機製可能是低能量密度激光輻照減少瞭光柵錶麵的汙染物併降低瞭光柵錶麵的粗糙度.激光預處理可以作為優化光柵結構、痠洗等一繫列提高多層介質膜光柵閾值方法的一箇補充.
재N-on-1측시모식하연구료다층개질막광책적격광예처리효응.실험발현,격광예처리지후다층개질광책막적역치능제고도처리전역치적1.5～2.0배.예처리궤제가능시저능량밀도격광복조감소료광책표면적오염물병강저료광책표면적조조도.격광예처리가이작위우화광책결구、산세등일계렬제고다층개질막광책역치방법적일개보충.
Laser-conditioning on multilayer dielectric gratings(MDGs) is investigated with the standard Non1 test method.It is found that the laser induced damage threshold(LIDT) of MDGs is increased up to 2.0 times the value without laser-conditioning.The possible physical mechanism can be explained by the reduction of contamination and surface roughness in the grating region under the irradiation of laser with low energy.In addition to the existing methods such as grating structure optimization and acid-cleaning,laser-conditioning could be an alternative way to improve the LIDT of MDGs.
