High-speed varifocal imaging with a tunable acoustic gradient index of refraction lens

Alexandre Mermillod-Blondin, Euan McLeod, Craig B. Arnold

Research output: Contribution to journalArticle

109 Scopus citations

Abstract

Fluidic lenses allow for varifocal optical elements, but current approaches are limited by the speed at which focal length can be changed. Here we demonstrate the use of a tunable acoustic gradient (TAG) index of refraction lens as a fast varifocal element. The optical power of the TAG lens varies continuously, allowing for rapid selection and modification of the effective focal length at time scales of 1 μs and shorter. The wavefront curvature applied to the incident light is experimentally quantified as a function of time, and single-frame imaging is demonstrated. Results indicate that the TAG lens can successfully be employed to perform high-rate imaging at multiple locations.

Original languageEnglish (US)
Pages (from-to)2146-2148
Number of pages3
JournalOptics Letters
Volume33
Issue number18
DOIs
StatePublished - Sep 15 2008

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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