کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7129560 1461598 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Propagation and spatiotemporal coupling characteristics of ultra-short Gaussian vortex pulse
ترجمه فارسی عنوان
ویژگی های تکثیر و اسپکتیومتراپوپروپولیک پالس گردابی گاوس بسیار کوتاه است
کلمات کلیدی
تیرهای گرداب، اتصال اسپکتیومیومی، نبض، ویژگی های انتقال،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی
Based on Collins diffraction integral formula, the propagation equation of ultra-short Gaussian vortex pulse beam has been derived. Using the equation, the intensity distribution variations of vortex pulse in the propagation process are calculated. Specially, the spatiotemporal coupling characteristics of ultra-short vortex beams are discussed in detail. The results show that some key parameters, such as transverse distance, transmission distance, pulse width and topological charge number will influence the spatiotemporal coupling characteristics significantly. With the increasing of transverse distance, the waveforms of the pulses distort obviously. And when transmission distance is far than 50 mm, the distribution curve of transverse intensity gradually changes into a Gaussian type. In addition, initial pulse width will affect the distribution of light field, however, when initial pulse width is larger than 3 fs, the spatiotemporal coupling effect will be insignificant. Topological charge number does not affect the time delay characteristics, since with the increasing of topological charge number, the waveform of the pulse distorts gradually but the time delay does not occur.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 101, May 2018, Pages 446-450
نویسندگان
, , ,