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Optics Letters

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  • Vol. 26, Iss. 3 — Feb. 1, 2001
  • pp: 119–121

Diffraction-limited dark laser spot produced by a hollow optical fiber

Yong-Il Shin, Kihwan Kim, Jong-An Kim, Heung-Ryoul Noh, Wonho Jhe, Kyunghwan Oh, and Un-Chul Paek  »View Author Affiliations


Optics Letters, Vol. 26, Issue 3, pp. 119-121 (2001)
http://dx.doi.org/10.1364/OL.26.000119


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Abstract

By using the diffracted field of the LP11 mode of a hollow-core optical fiber, we have produced a micrometer-sized, focused dark laser spot in the near field of the fiber. The minimum half-width of the dark spot is less than 1 μm . In particular, by masking the hollow core and metal coating the cladding with a microsphere, we blocked the light propagating in the cladding and obtained a clean dark spot, which may be useful in atom-optical experiments such as with atomic lenses, atom traps, and atom switches.

© 2001 Optical Society of America

OCIS Codes
(000.4930) General : Other topics of general interest
(020.7010) Atomic and molecular physics : Laser trapping
(050.1940) Diffraction and gratings : Diffraction
(140.3300) Lasers and laser optics : Laser beam shaping

Citation
Yong-Il Shin, Kihwan Kim, Jong-An Kim, Heung-Ryoul Noh, Wonho Jhe, Kyunghwan Oh, and Un-Chul Paek, "Diffraction-limited dark laser spot produced by a hollow optical fiber," Opt. Lett. 26, 119-121 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-3-119


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