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Spectral-domain optical coherence tomography with a Fresnel spectrometer |
Optics Letters, Vol. 37, Issue 8, pp. 1307-1309 (2012)
http://dx.doi.org/10.1364/OL.37.001307
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Abstract
We propose a novel spectral-domain optical coherence tomography (SD-OCT) equipped with a Fresnel spectrometer, which utilizes a Fresnel zone plate (FZP) as both dispersion and focusing optics and thus spreads the spectral interferogram evenly in wavenumber domain because of the proportional relation between the focal length of the FZP and the wavenumber. With no need of the conversion calculation from wavelength to wavenumber in conventional SD-OCT, this new design is favorable for fast imaging with high resolution. As only a FZP and CCD are used, the Fresnel spectrometer is simple and compact. It is experimentally shown that its performance is as good as that of numerical interpolation in conventional SD-OCT. Imaging of bio-tissue by Fresnel SD-OCT is also demonstrated.
© 2012 Optical Society of America
OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(110.4500) Imaging systems : Optical coherence tomography
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(300.6190) Spectroscopy : Spectrometers
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: December 12, 2011
Revised Manuscript: February 14, 2012
Manuscript Accepted: February 16, 2012
Published: April 6, 2012
Virtual Issues
Vol. 7, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Ning Zhang, Tianyuan Chen, Chengming Wang, Jian Zhang, Tiancheng Huo, Jinggao Zheng, and Ping Xue, "Spectral-domain optical coherence tomography with a Fresnel spectrometer," Opt. Lett. 37, 1307-1309 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-37-8-1307
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