Axial Beam Shaping with Nonspherical Microoptics
- 1 June 1998
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 37 (6S) , 3701-3707
- https://doi.org/10.1143/jjap.37.3701
Abstract
Thin film technologies have been used to fabricate special types of continuous-relief microoptical arrays with extremely nonspherical phase functions for axial beam shaping. Microlenses with Gaussian and double-parabolic profiles are found to generate extended or axially oscillating foci and have also been found to be much less sensitive to the axial position and tilt in comparison with parabolic lenses. The optical properties have been determined in improved experiments. The focusing behavior of the small bifocal microlenses with short focal distances has been investigated with a scanning near-field optical microscope (SNOM). The results of excimer laser drilling of holes in glass using microlenses with two axially separated focal zones are presented. Applications for mode-selection in micro-lasers and axial scanning and switching are proposed.Keywords
This publication has 13 references indexed in Scilit:
- Thin-film microlens arrays with non-spherical elementsPure and Applied Optics: Journal of the European Optical Society Part A, 1997
- Quasi-toric planar microlenses for oblique-incidence light beamsApplied Optics, 1997
- A Compact-Disc-Compatible Digital Versatile Disc Pickup Using Annular MaskJapanese Journal of Applied Physics, 1997
- Evaluation of microlens properties in the presence of high spherical aberrationApplied Optics, 1995
- Subdiffraction-limited focusing lensApplied Optics, 1994
- Axial irradiance shaping with binary polar curvesOptics Communications, 1994
- Gaussian-to-Bessel beam transformation using a split refracting systemApplied Optics, 1993
- Holographic generation of diffraction-free beamsApplied Optics, 1988
- Diffraction-free beamsPhysical Review Letters, 1987
- The Axicon: A New Type of Optical ElementJournal of the Optical Society of America, 1954