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Tunable Semiconductor Laser at 1025-1095 nm Range for OCT Applications with an Extended Imaging Depth

机译:适用于OCT应用的1025-1095 nm范围的可调半导体激光器,具有扩展的成像深度

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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 10~4 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.
机译:基于InGaAs半导体光放大器和光纤环腔中的窄带通声光可调滤光片,开发了光谱范围为1025-1095 nm的可调谐半导体激光器。演示了无模跳扫描,调谐速度高达10〜4 nm / s。瞬时线宽在0.06-0.15 nm的范围内,侧模抑制高达50 dB,偏振消光比超过18 dB。输出单模光纤的光功率达到20 mW。该激光器用于OCT系统中,以对浸入0.5%脂质内溶液中的隐形眼镜成像。横截面图像提供了大于5mm的成像深度。

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