Journal
BIOMEDICAL OPTICS EXPRESS
Volume 3, Issue 10, Pages 2647-2657Publisher
OPTICAL SOC AMER
DOI: 10.1364/BOE.3.002647
Keywords
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Funding
- Emmy Noether program of the German Research Foundation [DFG - HU 1006/2-1]
- European Union project FUN-OCT (FP7 HEALTH) [201880]
- FDML-Raman (FP7 ERC) [259158]
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We present a 1300 nm Fourier domain mode locked (FDML) laser for optical coherence tomography (OCT) that combines both, a high 1.6 MHz wavelength sweep rate and an ultra-long instantaneous coherence length for rapid volumetric deep field imaging. By reducing the dispersion in the fiber delay line of the FDML laser, the instantaneous coherence length and hence the available imaging range is approximately quadrupled compared to previously published MHz-FDML setups, the imaging speed is increased by a factor of 16 compared to previous extended coherence length results. We present a detailed characterization of the FDML laser performance. We demonstrate for the first time MHz-OCT imaging of the anterior segment of the human eye. The OCT system provides enough imaging depth to cover the whole range from the top surface of the cornea down to the crystalline lens. (c) 2012 Optical Society of America
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