论文标题
基于100 MHz和100 nm扫描源的超速速度光学相干断层扫描
Ultrahigh-speed optical coherence tomography based on a 100 MHz and 100 nm swept source
论文作者
论文摘要
我们根据100 MHz扫描源（SS）展示了超高速度光学相干断层扫描（OCT）。所有偏振化的图形9模式锁纤维激光器用作种子激光器。在掺杂纤维放大器中非线性光谱膨胀后，获得具有1 dB和10 dB带宽为73.7 nm和106 nm的平坦顶部光谱。宽带飞秒脉冲在分散补偿纤维的一部分中延伸至扫描信号，总分散体为-84 ps/nm。使用扫掠的源，SS-OCT的轴向分辨率为21 UM，6 dB灵敏度滚动长度为3 mm。通过使用具有高成像质量的SS-OCT获得编码磁盘和与17,000 rpm共同旋转的硬盘共同旋转的硬盘图像。
We demonstrate an ultrahigh-speed optical coherence tomography (OCT) based on a 100 MHz swept source (SS). An all polarization-maintaining figure-9 mode-locked fiber laser is used as the seed laser. After nonlinear spectral expansion in an Erbium-doped fiber amplifier, a flat top spectrum with respectively 1-dB and 10-dB bandwidths of 73.7 nm and 106 nm is obtained. The broadband femtosecond pulse is time stretched to a swept signal in a section of dispersion compensation fiber with a total dispersion of -84 ps/nm. With the swept source, the axial resolution of the SS-OCT is measured to be 21 um with a 6 dB sensitivity roll-off length of 3 mm. A tomographic image of an encoding disk and a hard disk jointly rotating at 17,000 rpm was acquired by using the SS-OCT with a high imaging quality.
