Focal shift in focused radially polarized ultrashort pulsed laser beams


Autoria(s): 吴国华; 楼祺洪; 周军; 董景星; 魏运荣
Data(s)

2007

Resumo

Beginning with a beam coherence polarization (BCP) matrix, we obtain an analytical intensity expression for radially polarized ultrashort pulsed laser beams that pass through an apertureless aplanatic lens. We also investigate the intensity distribution of radially polarized beams in the vicinity of the focus. The focal shift of these beams is studied in detail. The focal shift depends strongly on Z(F) that coincides with pi times the Fresnel number. (c) 2007 Optical Society of America.

Identificador

http://ir.siom.ac.cn/handle/181231/2765

http://www.irgrid.ac.cn/handle/1471x/11645

Idioma(s)

英语

Fonte

吴国华;楼祺洪;周军;董景星;魏运荣.,Appl. Optics,2007,46(25):6251-6255

Palavras-Chave #Ultrashort pulsed laser beams #Fresnel number #Apertureless aplanatic lens
Tipo

期刊论文