کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5449328 | 1512526 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pressure-dependent phase matching for high harmonic generation of Ar and N2 in the tight focusing regime
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We experimentally investigate gas pressure-dependent effect on the high harmonic generation (HHG) of Ar and N2 gases in a tight focusing regime with near IR ultrafast laser fields. Different from a loose-focusing condition, the measured data show a shift of the pressure regime for phase matching towards to the lower pressure side with the increasing driven laser intensity. By comparing the results with a theoretical calculation based on the Constant' one-dimensional model, we illustrate that this pressure dependence stems from the Gaussian beam phase gradient and atomic dipole phase which can become the key factors for phase matching in the tight focusing regime, interested in a high-repetition-rate coherent extreme-ultraviolet generation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 397, 15 August 2017, Pages 118-121
Journal: Optics Communications - Volume 397, 15 August 2017, Pages 118-121
نویسندگان
Yong Niu, Fangyuan Liu, Yi Liu, Hongjing Liang, Yujun Yang, Ri Ma, Dajun Ding,