کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7129424 | 1461598 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Periodic structures on germanium induced by high repetition rate femtosecond laser
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Laser-induced periodic surface structures (LIPSS) are studied on germanium surface in air by the femtosecond pulsed laser with repetition frequency of 76â¯MHz and wavelength λ of 800â¯nm. Three types of LIPSS were found and they are low-spatial-frequency LIPSS (LSFL), high-spatial-frequency LIPSS (HSFL), and LSFL superimposed with HSFL. The period ÎLSFL of LSFL shrinks quickly from approximately 650â¯nm to 400â¯nm (â¼Î»/2) when lowering the scanning speed. Comparatively, the period ÎHSFL of HSFL keeps almost constant between 90 and 100â¯nm (â¼Î»/8) when the scanning speed and the laser pulse energy vary. LSFL and HSFL coexist when the laser pulse energy is around 3.3â¯nJ/pulse and the scanning speed ranges between 3 and 8â¯mm/s. The surface plasmon polariton waves make a contribution to the formation of LIPSS and the fourth harmonic generation (FHG) might be involved in the formation of HSFL.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 101, May 2018, Pages 291-297
Journal: Optics & Laser Technology - Volume 101, May 2018, Pages 291-297
نویسندگان
Xiaoming Lin, Xiaohong Li, Yanbin Zhang, Changxin Xie, Kaijun Liu, Qiang Zhou,