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Optical Engineering

Proposal to obtain a hollow laser beam from a hollow cone-shaped resonator
Author(s): Jinglun Liu; Yude Li; Mei Chen; Junping Guo; Feng Zhao
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Paper Abstract

A CO2 laser with a hollow cone-shaped resonator (HCR) for producing a hollow laser beam (HLB) is proposed. The HCR consists of a totally reflective mirror and a partially reflective mirror at the two ends of a hollow cone-shaped discharge tube. In a longitudinal section of the HCR along its axis of symmetry it can be regarded as a folded cavity. Employing an standard optical system, the HLBs can be focused to meet the requirements of various applications. Analysis shows that not only can an HLB be obtained, but also the radius of the dark region of the focused HLB is easy to adjust. The hollow cone-shaped CO2 laser may be used as a new type of optical tweezers.

Paper Details

Date Published: 1 October 2007
PDF: 5 pages
Opt. Eng. 46(10) 108001 doi: 10.1117/1.2790912
Published in: Optical Engineering Volume 46, Issue 10
Show Author Affiliations
Jinglun Liu, Sichuan Univ. (China)
Yude Li, Sichuan Univ. (China)
Mei Chen, Sichuan Univ. (China)
Junping Guo, Sichuan Univ. (China)
Feng Zhao, Ludong Univ. (China)

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