Abstract
A forward-viewing resonant fiber-optic endoscope of a scanning speed appropriate for a high-speed Fourier-domain optical coherence tomography (FD-OCT) system was developed to enable real-time, three-dimensional endoscopic OCT imaging. A new method was explored to conveniently tune the scanning frequency of a resonant fiber-optic scanner, by properly selecting the fiber-optic cantilever length, partially changing the mechanical property of the cantilever, and adding a weight to the cantilever tip. Systematic analyses indicated the resonant scanning frequency can be tuned over two orders of magnitude spanning from ∼10Hz to ∼kHz. Such a flexible scanning frequency range makes it possible to set an appropriate scanning speed of the endoscope to match the different Ascan rates of a variety of FD-OCT systems. A 2.4-mm diameter, 62.5-Hz scanning endoscope appropriate to work with a 40-kHz swept-source OCT (SS-OCT) system was developed and demonstrated for 3D OCT imaging of biological tissues.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 14375-14384 |
| Number of pages | 10 |
| Journal | Optics Express |
| Volume | 18 |
| Issue number | 14 |
| DOIs | |
| State | Published - Jul 5 2010 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics