Journal
OPTICS EXPRESS
Volume 12, Issue 20, Pages 4822-4828Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPEX.12.004822
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Funding
- NCI NIH HHS [R01 CA103769-02, R01 CA103769, R33 CA110130-02, R33 CA110130] Funding Source: Medline
- NHLBI NIH HHS [R01 HL070039, R01 HL070039-02] Funding Source: Medline
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A novel technique using an acousto-optic frequency shifter in optical frequency domain imaging (OFDI) is presented. The frequency shift eliminates the ambiguity between positive and negative differential delays, effectively doubling the interferometric ranging depth while avoiding image cross-talk. A signal processing algorithm is demonstrated to accommodate nonlinearity in the tuning slope of the wavelength-swept OFDI laser source. (C)2004 Optical Society of America.
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