Peering into darkness with a vortex spatial filter
- 15 April 2001
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 26 (8) , 497-499
- https://doi.org/10.1364/ol.26.000497
Abstract
I propose to use as a window the dark core of an optical vortex to examine a weak background signal hidden in the glare of a bright coherent source. Applications such as the detection of an astronomical object, forward-scattered radiation, and incoherent light are described whereby signal enhancements of at least 7 orders of magnitude may be achieved.Keywords
This publication has 8 references indexed in Scilit:
- Nonlinear optical catastrophe from a smooth initial beamOptics Letters, 1999
- Holographic formation of optical-vortex filamentsJournal of the Optical Society of America B, 1998
- An Imaging Nulling Interferometer to Study Extrasolar PlanetsThe Astrophysical Journal, 1997
- Transverse modes, vortices and vertical-cavity surface-emitting lasersChaos, Solitons, and Fractals, 1994
- Optical vortex solitons observed in Kerr nonlinear mediaPhysical Review Letters, 1992
- Stable black self-guided beams of circular symmetry in a bulk Kerr mediumOptics Letters, 1992
- Optical caustics in the near field from liquid dropsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1978
- Dislocations in wave trainsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1974