کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11023491 | 1701282 | 2019 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laser Induced Damage Threshold of Ta2O5 and Ta2O5/SiO2 Films at 532 and 1064 nm
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Laser induced damage threshold (LIDT) of conventional electron beam deposited Ta2O5 and SiO2 thin films on BK-7 substrate are studied to see the effect of multilayer boundary and related effect for their combination as high and low index material films when number of layers increases as well as improvement on upper two non-quarter wave thickness layers. Reflection spectra of these samples show a relatively small decrease in reflection in non-quarter wave layer design and Grazing Incidence X-ray Diffraction (GIXRD) patterns show that deposited films are amorphous, having high (4.2âeV) band gap, sufficient high refractive index and very low extinction coefficient or low absorption which are factors favourable for high laser induced damage threshold. LIDT measured for single layer at 1064ânm is higher than that of multilayers and vice-versa at 532ânm wavelength. However, improvement of LIDT with non- quarter wave outer layers is more at 532ânm than 1064ânm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 176, January 2019, Pages 438-447
Journal: Optik - Volume 176, January 2019, Pages 438-447
نویسندگان
Sunil Kumar, Ajay Shankar, Nawal Kishore, C. Mukherjee, Rajiv Kamparath, Sudhakar Thakur,