Proceedings ArticleDOI
Forward-Imaging Swept Source Optical Coherence Tomography using Silicon MEMS Scanner for High-Speed 3-D Volumetric Imaging
Karthik Kumar,Jonathan C. Condit,Austin McElroy,Nate Kemp,Kazunori Hoshino,Thomas E. Milner,Xiaojing Zhang +6 more
- pp 10-11
TLDR
A fiber-based forward-imaging swept source OCT (SS-OCT) system using a two-axis silicon micromachined vertical comb-drive microscanner for high-speed, 3-D imaging of biological specimens provides good imaging performance.Abstract:
We demonstrate a fiber-based forward-imaging swept source OCT (SS-OCT) system using a two-axis silicon micromachined vertical comb-drive microscanner for high-speed, 3-D imaging of biological specimens. Higher signal-to-noise ratio of SS-OCT over traditional time-domain techniques, combined with low beam-steering loss of silver-coated scanning micromirrors with over 90% reflectivity, provide good imaging performance. Fast wavelength scanning of the laser source (scan rate: 20 kHz) over 110 nm spectral bandwidth enabled image acquisition at 8 million voxels/sec (3-D imaging) or 40 fps (2-D imaging, 500 transverse pixels per image). We successfully acquired en face and tomographic in vitro images of rigid structures (microscanner), soft materials (onion and pickle slices), and in vivo images of epidermis. Lateral resolution of 12.5 mum and axial resolution of 10 mum over a 2x1times4 mm3 imaging volume has been demonstrated. The compact forward-imaging OCT probe may be suitable for image-guided minimal-invasive examination of various diseased tissues.read more
Citations
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Journal ArticleDOI
Fast 3D in vivo swept-source optical coherence tomography using a two-axis MEMS scanning micromirror
Karthik Kumar,Jonathan C. Condit,Austin McElroy,Nate J. Kemp,Kazunori Hoshino,Thomas E. Milner,Xiaojing Zhang +6 more
TL;DR: In this article, a fiber-based forward-imaging swept-source optical coherence tomography system using a high-reflectivity two-axis microelectromechanical scanning mirror for high-speed 3D in vivo visualization of cellular-scale architecture of biological specimens is presented.
Journal ArticleDOI
A Silicon Optical Bench-Based Forward-View Two-Axis Scanner for Microendoscopy Applications.
TL;DR: A new monolithic two-axis forward-view optical scanner composed of an electrothermally driven MEMS mirror and a beam folding mirror both vertically standing and integrated on a silicon substrate that will enable such imaging probes to enter the subsegmental bronchi of an adult patient.
Proceedings ArticleDOI
Travelling-wave modeling of dynamics of ultrafast reflective-intracavity-filter tunable Fabry-Pérot lasers for optical coherence tomography
Eugene A. Avrutin,Lixiong Zhang +1 more
TL;DR: In this paper, the effect of filter properties and linewidth enhancement factor of the laser performance was assessed by travelling-wave modeling, where the authors investigated the dynamics of Fabry-Perot external-cavity laser diodes frequency-swept at a high rate using a tunable intracavity filter.
References
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