Generation of high quality tunable Bessel beams using a liquid-immersion axicon


Akturk S., Arnold C. L., Prade B., Mysyrowicz A.

OPTICS COMMUNICATIONS, vol.282, no.16, pp.3206-3209, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 282 Issue: 16
  • Publication Date: 2009
  • Doi Number: 10.1016/j.optcom.2009.05.026
  • Journal Name: OPTICS COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3206-3209
  • Istanbul Technical University Affiliated: Yes

Abstract

By immersing a conventional glass axicon in index-matching liquid, we generated high quality, tunable, quasi-non-diffracting Bessel beams. The aberrations resulting from the roundness of the axicon tip are minimized when a large base angle is used in liquid-immersion. This configuration also allows coarse and fine tunability through changing the liquid and adjusting the temperature, respectively. Our experimental results match very well with calculated intensity profiles. We succeeded to generate two-meter long plasma channels in air by focusing femtosecond laser pulses with the liquid-immersion axicon. (C) 2009 Elsevier B.V. All rights reserved.