Generation and application of twisted hollow beams

Chunqing Gao; Mingwei Gao; Horst Weber

doi:10.1078/0030-4026-00342

Generation and application of twisted hollow beams

Chunqing Gao^*, Mingwei Gao, Horst Weber

^*Corresponding author for this work

School of Optics and Photonics

Technical University of Berlin

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The twisted hollow beam was generated by transformation of Hermite-Gaussian beams through an optical system, consisting of three rotated cylindrical lenses. The intensity distribution and phase structure of the twisted hollow beam were theoretically analyzed by using Collins diffraction integral. In the experiment the twisted hollow beam was generated by transforming the Hermite-Gaussian mode TEM_m,0 of a diode pumped Nd: YAG laser. Micro particles were trapped by this hollow beam and rotated due to the twist (angular momentum).

Original language	English
Pages (from-to)	129-132
Number of pages	4
Journal	Optik
Volume	115
Issue number	3
DOIs	https://doi.org/10.1078/0030-4026-00342
Publication status	Published - 2004

Keywords

Angular momentum
Beam transformation
Hollow beam
Twist

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10.1078/0030-4026-00342

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AU - Weber, Horst

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AB - The twisted hollow beam was generated by transformation of Hermite-Gaussian beams through an optical system, consisting of three rotated cylindrical lenses. The intensity distribution and phase structure of the twisted hollow beam were theoretically analyzed by using Collins diffraction integral. In the experiment the twisted hollow beam was generated by transforming the Hermite-Gaussian mode TEMm,0 of a diode pumped Nd: YAG laser. Micro particles were trapped by this hollow beam and rotated due to the twist (angular momentum).

KW - Angular momentum

KW - Beam transformation

KW - Hollow beam

KW - Twist

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Generation and application of twisted hollow beams

Abstract

Keywords

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