کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9786183 1512667 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Third harmonic beam profile generated in atmospheric air using femtosecond laser pulses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Third harmonic beam profile generated in atmospheric air using femtosecond laser pulses
چکیده انگلیسی
We present, both experimentally and theoretically, the results on third harmonic generation in air during the filamentation of a powerful femtosecond laser pulse. The third harmonic beam pattern shows a central spot on the propagation axis at lower pump energy and is then surrounded by bright third harmonic conical emission at higher pump energy. We argue that the combined action of self-focusing and plasma generation in air plays an important role for the on-axis and off-axis phase-matching conditions along the filament resulting in high conversion efficiency. The experimental results are in good qualitative agreement with numerical simulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 245, Issues 1–6, 17 January 2005, Pages 399-405
نویسندگان
, , , , ,