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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 24 — Dec. 1, 2003
  • pp: 3210–3219

High-speed optical coherence tomography using fiberoptic acousto-optic phase modulation

Tuqiang Xie, Zhenguo Wang, and Yingtian Pan  »View Author Affiliations

Optics Express, Vol. 11, Issue 24, pp. 3210-3219 (2003)

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We report a new rapid-scanning optical delay device suitable for high-speed optical coherence tomography (OCT) in which an acousto-optic modulator (AOM) is used to independently modulate the Doppler frequency shift of the reference light beam for optical heterodyne detection. Experimental results show that the fluctuation of the measured Doppler frequency shift is less than ±0.2% over 95% duty cycle of OCT imaging, thus allowing for enhanced signal-to-noise ratio of optical heterodyne detection. The increased Doppler frequency shift by AOM also permits complete envelop demodulation without the compromise of reducing axial resolution; if used with a resonant rapid-scanning optical delay, it will permit high-performance real-time OCT imaging. Potentially, this new rapid-scanning optical delay device will improve the performance of high-speed Doppler OCT techniques.

© 2003 Optical Society of America

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4090) Medical optics and biotechnology : Modulation techniques
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(170.7230) Medical optics and biotechnology : Urology

ToC Category:
Research Papers

Original Manuscript: September 16, 2003
Revised Manuscript: November 11, 2003
Published: December 1, 2003

Tuqiang Xie, Zhenguo Wang, and Yingtian Pan, "High-speed optical coherence tomography using fiberoptic acousto-optic phase modulation," Opt. Express 11, 3210-3219 (2003)

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