|
|||||
|
|
Extending the depth of focus with high NA lens axicon |
|
| Authors: | KB Rajesh Zbigniew Jaroszewicz TVS Pillai |
| Institution: | a Department of Physics, Anna University of Technology Tirunelveli, Tirunelveli, India b Institute of Applied Optics, Department of Physical Optics and National Institute of Telecommunications, Warsaw, Poland c Department of Physics, Periyar University, Salem, India |
| Abstract: | Based on vectorial Debye theory, tight focusing of x-polarized beam with high NA lens axicon is studied. The high NA lens axicon utilizes spherical aberration to duplicate the performance of an axicon and to create an extended focal line. The intensity distribution in the focal region is illustrated by numerical calculations. We show that the high NA lens axicon system can generates a sub wavelength beam (0.826λ) with depth of focus around 10λ. |
| Keywords: | Linearly polarized beam Lens axicon |
| 本文献已被 ScienceDirect 等数据库收录！ | |