Translator Disclaimer
1 February 2008 Incomplete annular beam
Author Affiliations +
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.
©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)
Rijuparna Chakraborty, S. Sendhil Raja, and Ajay Ghosh "Incomplete annular beam," Optical Engineering 47(2), 028002 (1 February 2008). https://doi.org/10.1117/1.2834283
Published: 1 February 2008
JOURNAL ARTICLE
6 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Generation of hollow optical beams for optical manipulation
Proceedings of SPIE (September 16 2014)
High-speed single-pixel digital holography
Proceedings of SPIE (June 26 2017)
Beam shaping with diffractive optical elements
Proceedings of SPIE (August 13 1993)

Back to Top