DocumentCode
500549
Title
Tight focal spot and long depth of focus by radially polarized, narrow-width annular beams from photonic-crystal lasers
Author
Kitamura, Kyoko ; Sakai, Kyosuke ; Kurosaka, Yoshitaka ; Miyai, Eiji ; Kunishi, Wataru ; Ohnishi, Dai ; Noda, Susumu
Author_Institution
Dept. of Electron. Sci. & Eng., Kyoto Univ., Kyoto, Japan
fYear
2009
fDate
2-4 June 2009
Firstpage
1
Lastpage
2
Abstract
We found that tighter focal spots with longer depths of focus are achieved by radially polarized annular beams with controlled inner and outer radii, which could lead to high-tolerance, super-resolution applications in compact optical systems.
Keywords
laser beams; light polarisation; photonic crystals; annular beams; depth of focus; focal spot; photonic-crystal lasers; radial polarisation; Control systems; Electronic mail; Laser beams; Laser theory; Optical control; Optical polarization; Photonic crystals; Photonics Society; Research and development; Stimulated emission; (140.2020) Diode lasers; (140.7270) Vertical emitting lasers; (260.1960) Diffraction theory; (260.5430) Polarization;
fLanguage
English
Publisher
ieee
Conference_Titel
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location
Baltimore, MD
Print_ISBN
978-1-55752-869-8
Electronic_ISBN
978-1-55752-869-8
Type
conf
Filename
5225961
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