1 February 2008 Incomplete annular beam
Author Affiliations +
Optical Engineering, 47(2), 028002 (2008). doi:10.1117/1.2834283
Abstract
The wavefront of circular dark-hollow-beams with wavelength λ produces a helix of pitch m λ, where m is an integer. But the central phase singularity of such beams can also be generated reducing the pitch by using a modulo operation. When such a beam interferes destructively with an unmodified annular beam of the same order, an incomplete annular beam is produced. The final beam, generated using a standard computer-generated holographic procedure, retains its shape up to 1.5 cm. A potential use of such beams for manipulation of microorganisms has been indicated through a dynamic holographic procedure using a spatial light modulator.
Rijuparna Chakraborty, S. Sendhil Raja, Ajay Ghosh, "Incomplete annular beam," Optical Engineering 47(2), 028002 (1 February 2008). http://dx.doi.org/10.1117/1.2834283
JOURNAL ARTICLE
6 PAGES


SHARE
KEYWORDS
Diffractive optical elements

Bessel beams

Optical engineering

Holography

Modulation

Spatial light modulators

Beam shaping

Back to Top