Journal
OPTICS EXPRESS
Volume 22, Issue 3, Pages 2632-2655Publisher
Optica Publishing Group
DOI: 10.1364/OE.22.002632
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Funding
- Medical University of Vienna, the European projects FAMOS (FP7) [ICT 317744]
- FUN OCT (FP7 HEALTH) [201880]
- Macular Vision Research Foundation (MVRF, USA), Austrian Science Fund (FWF) [S10510-N20]
- Christian Doppler Society (Christian Doppler Laboratory Laser development and their application in medicine)
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We demonstrate, for the first time, OCT imaging capabilities of a novel, akinetic (without any form of movement in the tuning mechanism), all-semiconductor, all-electronic tunable, compact and flexible swept source laser technology at 1550 nm and 1310 nm. To investigate its OCT performance, 2D and 3D ex vivo and in vivo OCT imaging was performed at different sweep rates, from 20 kHz up to 200 kHz, with different axial resolutions, about 10 mu m to 20 mu m, and at different coherence gate displacements, from zero delay to >17 cm. Laser source phase linearity and phase repeatability standard deviation of <2 mrad (<160 pm) were observed without external phase referencing, indicating that the laser operated close to the shot noise limit (similar to 2 x factor); constant percentile wavelengths variations of sliding RIN and ortho RIN <0.2% could be demonstrated, similar to 5 times better as compared to other swept laser technologies. (C)2014 Optical Society of America
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