Generation of a spiral wave using amplitude masks

Marcelino Anguiano-Morales; Didia P. Salas-Peimbert; Gerardo Trujillo-Schiaffino

doi:10.1117/12.903062

2 November 2011 Generation of a spiral wave using amplitude masks

Marcelino Anguiano-Morales, Didia P. Salas-Peimbert, Gerardo Trujillo-Schiaffino

Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 801168 (2011) https://doi.org/10.1117/12.903062
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

Optical beams of Bessel-type whose transverse intensity profile remains unchanged under free-space propagation are called nondiffracting beams. Experimentally, Durnin used an annular slit on the focal plane of a convergent lens to generate a Bessel beam. However, this configuration is only one of many that can be used to generate nondiffracting beams. The method can be modified in order to generate a required phase distribution in the beam. In this work, we propose a simple and effective method to generate spiral beams whose intensity remains invariant during propagation using amplitude masks. Laser beams with spiral phase, i.e., vortex beams have attracted great interest because of their possible use in different applications for areas ranging from laser technologies, medicine, and microbiology to the production of light tweezers and optical traps. We present a study of spiral structures generated by the interference between two incomplete annular beams.

Citation Download Citation

Marcelino Anguiano-Morales, Didia P. Salas-Peimbert, and Gerardo Trujillo-Schiaffino "Generation of a spiral wave using amplitude masks", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 801168 (2 November 2011); https://doi.org/10.1117/12.903062

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