Light focusing microprobes for biomedical and photonics applications based on integrated microsphere arrays

Arash Darafsheh, Oleksiy V. Svitelskiy, Vasily N. Astratov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The task of development of compact light-focusing tools for biomedical and photonics applications is challenging due to the multimodal structure of beams propagating in flexible delivery systems of such devices. In this study it is shown that integration of microspheres inside hollow waveguides or capillaries permits compact focusing of light from multimodal sources. Experimental studies were performed for variety of spheres with sizes from 10 to 300 μm with refraction indices ranging from 1.47 to 1.9. It is shown that for high index (1.9) spheres the smallest focused spots can be obtained in chains containing odd number of spheres. It is also demonstrated that increasing the length of such chains generally provides smaller focused spot sizes at the expense of the transmitted power. The underlying optical properties are shown to be based on the filtering of the modes with the best focusing properties in such structures. It is demonstrated that under contact with tissue such structures allow obtaining focused beams with high throughput and wavelength-scale dimensions that can be used for developing novel ultra-precise laser surgical tools.

Original languageEnglish
Title of host publication2010 12th International Conference on Transparent Optical Networks, ICTON 2010
DOIs
StatePublished - 2010
Event2010 12th International Conference on Transparent Optical Networks, ICTON 2010 - Munich, Germany
Duration: Jun 27 2010Jul 1 2010

Publication series

Name2010 12th International Conference on Transparent Optical Networks, ICTON 2010

Conference

Conference2010 12th International Conference on Transparent Optical Networks, ICTON 2010
Country/TerritoryGermany
CityMunich
Period06/27/1007/1/10

Keywords

  • Focusing
  • Laser surgery
  • Microlenses
  • Microoptics
  • Microspheres
  • Optical microprobes

Fingerprint

Dive into the research topics of 'Light focusing microprobes for biomedical and photonics applications based on integrated microsphere arrays'. Together they form a unique fingerprint.

Cite this