کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5427125 1508620 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the validity of localized approximation for an on-axis zeroth-order Bessel beam
ترجمه فارسی عنوان
در مورد اعتبار تقریب متمرکز برای یک پرتو بسل در محور زرهی
کلمات کلیدی
نظریه های لورنز متمرکز، ضرایب شکل پرتو، تقریبهای محلی پرتو بسل،
موضوعات مرتبط
مهندسی و علوم پایه شیمی طیف سنجی
چکیده انگلیسی


- The localized approximation has been widely used to evaluate the Beam Shape Coefficients (BSCs) of Bessel beams.
- The validity of this approximation is examined in the case of an on-axis zeroth-order Bessel beam.
- It is demonstrated, in this specific example, that the localized approximation is efficient only for small enough axicon angles.
- It is easily argued that this result must remain true for any kind of Bessel beams.

Localized approximation procedures are efficient ways to evaluate beam shape coefficients of laser beams, and are particularly useful when other methods are ineffective or inefficient. Several papers in the literature have reported the use of such procedures to evaluate the beam shape coefficients of Bessel beams. Examining the specific case of an on-axis zeroth-order Bessel beam, we demonstrate that localized approximation procedures are valid only for small axicon angles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 195, July 2017, Pages 18-25
نویسندگان
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