Journal
OPTICS LETTERS
Volume 32, Issue 6, Pages 626-628Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.32.000626
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- NCI NIH HHS [R01-CA75289-09] Funding Source: Medline
- NEI NIH HHS [R01-EY11289-20] Funding Source: Medline
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Buffered Fourier domain mode-locked (FDML) lasers are demonstrated for dynamic phase-sensitive optical coherence tomography (OCT) and 3D OCT phase microscopy. Systems are operated at sweep speeds of 42, 117, and 370 kHz, and displacement sensitivities of 39, 52, and 102 pm are achieved, respectively. Sensitivities are comparable to spectrometer-based OCT phase microscopy systems, but much faster acquisition speeds are possible. An additional factor of root 2 improvement in noise performance is observed for differential phase measurements, which is important for Doppler OCT. Dynamic measurements of piezoelectric transducer motion and static 3D OCT phase microscopy are demonstrated. Buffered FDML lasers provide excellent displacement sensitivities at extremely high sweep speeds. (c) 2007 Optical Society of America
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