Rapid scanning all-reflective optical delay line for real-time optical coherence tomography

Xiumei Liu, Michael J. Cobb, Xingde Li

Research output: Contribution to journalArticle

Abstract

We describe a dispersion-free high-speed scanning optical delay line that is suitable for real-time optical coherence tomography, in particular, when an ultrabroadband light source is used. The delay line is based on all-reflective optics consisting of two flat and one curved mirrors. We achieve optical path-length scanning by oscillating one of the two flat mirrors with a resonant galvanometer. The delay line is compact and easy to implement. A total scanning depth of 1.50 mm with an 89% duty ratio, a maximal scanning speed of ∼9.1 m/s, and a 4.1-kHz repetition rate has been demonstrated.

Original languageEnglish (US)
Pages (from-to)80-82
Number of pages3
JournalOptics Letters
Volume29
Issue number1
DOIs
StatePublished - Jan 1 2004
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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