کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1541829 | 996695 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of the spiral phase element on the radial-polarization (0, 1)â LG beam
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of the spiral phase element on the radial-polarization (0, 1)â LG beam Effect of the spiral phase element on the radial-polarization (0, 1)â LG beam](/preview/png/1541829.png)
چکیده انگلیسی
Radially-polarized beams can be strongly amplified without significant birefringent-induced aberrations. However, radially-polarized beam is a high-order beam, and therefore has to be transformed into a fundamental Gaussian beam for reduction the beam-propagation factor M2. In effort to transform the radially-polarized beam to a nearly-Gaussian beam, we consider effect of a spiral phase element (SPE) on the Laguerre-Gaussian (LG) (0, 1)â beam with radial polarization, and compare this with the case when the input beam is a LG (0, 1)â beam with spiral phase and uniform or random polarization. The LG (0, 1)â beam with radial polarization, despite its identity in intensity profile to the beam with spiral phase, has distinctly different properties when interacting with the SPE. With the SPE and spatial filter, we transformed the radially-polarized (0, 1)â mode with M2 = 2.8 to a nearly-Gaussian beam with M2 = 1.7. Measured transformation efficiency was 50%, and the beam brightness P/(M2)2 was practically unchanged. The SPE affects polarization state of the radially-polarized beam, leading to appearance of spin angular momentum in the beam center at the far-field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 271, Issue 1, 1 March 2007, Pages 190-196
Journal: Optics Communications - Volume 271, Issue 1, 1 March 2007, Pages 190-196
نویسندگان
G. Machavariani, Y. Lumer, I. Moshe, S. Jackel,