Direct generation of the lowest-order vortex beam using a spot defect mirror in the ultraviolet region

Yuuki Uesugi, Yuichi Kozawa, Shunichi Sato

Research output: Contribution to journalArticle

Abstract

The creation of ultraviolet optical vortex beams with the topological charge of |l| = 1 at the wavelength of 325 nm was demonstrated from a He-Cd metal vapor laser with a spot defect mirror. The measured M2 factor was close to the theoretical value of two of the LG01 Laguerre-Gaussian mode. Some interference experiments showed that the obtained vortex beams were stable enough for practical applications such as holographic lithography.

Original languageEnglish
Pages (from-to)2115-2118
Number of pages4
JournalOptics Letters
Volume45
Issue number7
DOIs
Publication statusPublished - 2020 Apr 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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