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2 March 2015 Tunable semiconductor laser at 1025-1095 nm range for OCT applications with an extended imaging depth
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Abstract
Tunable semiconductor laser for 1025-1095 nm spectral range is developed based on the InGaAs semiconductor optical amplifier and a narrow band-pass acousto-optic tunable filter in a fiber ring cavity. Mode-hop-free sweeping with tuning speeds of up to 104 nm/s was demonstrated. Instantaneous linewidth is in the range of 0.06-0.15 nm, side-mode suppression is up to 50 dB and polarization extinction ratio exceeds 18 dB. Optical power in output single mode fiber reaches 20 mW. The laser was used in OCT system for imaging a contact lens immersed in a 0.5% intra-lipid solution. The cross-section image provided the imaging depth of more than 5mm.
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Mikhail V. Shramenko, Alexander Chamorovskiy, Hong-Chou Lyu, Andrei A. Lobintsov, Karol Karnowski, Sergei D. Yakubovich, and Maciej Wojtkowski "Tunable semiconductor laser at 1025-1095 nm range for OCT applications with an extended imaging depth", Proc. SPIE 9312, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIX, 93123B (2 March 2015); https://doi.org/10.1117/12.2076890
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