Temperature Fields of Al2O3/MgF2 HR Coatings Prepared at Different Working Pressure
A series of samples were deposited by electron beam evaporation using the same deposition process at different working pressure. Transmittance of the HR coatings was measured by Lambda 900 spectrometer. Laser-induced damage threshold (LIDT) was measured by a 355 nm Nd:YAG laser with a pulse width of 7 ns. The LIDT results range from 2.69 J/cm2 to 11.03 J/cm2 with the working pressure changing. It was found that working pressure has important effects on the absorption and LIDT of 355nm Al2O3/MgF2 HR coatings. The temperature rise of HR coatings under laser irradiation was calculated by interfaces absorption model based on the theory of temperature fields. The results of temperature fields agree with the results of LIDT.
MeiQiong Zhan ZhongLin Wu
Shanghai second polytechnic university, No.2360 Jinhai Road, Shanghai, P.R. China
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-5
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）