Kowalevicz Andrew, Ko Tony, Hartl Ingmar, Fujimoto James, Pollnau Markus, Salathé René
Opt Express. 2002 Apr 8;10(7):349-53. doi: 10.1364/oe.10.000349.
A superluminescent Ti:Al2O(3) crystal is demonstrated as a light source for ultrahigh resolution optical coherence tomography (OCT). Single spatial mode, fiber coupled output powers of ~40 microW can be generated with 138 nm bandwidth using a 5 W frequency doubled, diode pumped laser, pumping a thin Ti:Al2O(3) crystal. Ultrahigh resolution OCT imaging is demonstrated with 2.2 microm axial resolution in air, or 1.7 microm in tissue, with >86 dB sensitivity. This light source provides a simple and robust alternative to femtosecond lasers for ultrahigh resolution OCT imaging.
一种超发光钛宝石晶体被证明可作为超高分辨率光学相干断层扫描（OCT）的光源。使用5W倍频二极管泵浦激光器泵浦薄钛宝石晶体，可产生单空间模式、光纤耦合输出功率约为40微瓦、带宽为138纳米的光。在空气中实现了轴向分辨率为2.2微米、在组织中为1.7微米的超高分辨率OCT成像，灵敏度大于86分贝。该光源为超高分辨率OCT成像提供了一种替代飞秒激光器的简单且稳健的选择。
