用于傅里叶域光学相干断层扫描的种子注入SU(1,1)干涉仪
Seeded SU(1,1) interferometry for Fourier-domain optical coherence tomography
AI总结：
该研究提出基于种子注入SU(1,1)干涉仪的FD-OCT，用1550nm宽带光探测多层物体、810nm光子通量成像，低参量增益下种子注入增光子通量，灵敏度增强效果优于提参量增益。
AI中文摘要：
我们展示了一种基于种子注入SU(1,1)干涉仪的傅里叶域光学相干断层扫描（FD-OCT）。使用中心波长为1550nm的宽带光探测多层物体，从中心波长为810nm的光子通量测量中重建深度分辨的三维图像。我们表明，在低参量增益区域，种子注入会增加光子通量，使得可以使用光谱仪而非单光子探测器进行体积成像。我们的分析进一步显示，在所考虑的条件下，种子注入比提高参量增益提供了更有效的灵敏度增强途径。
英文摘要：
We demonstrate Fourier-domain optical coherence tomography (FD-OCT) based on a seeded SU(1,1) interferometer. Multilayer objects are probed with broadband light centered at 1550nm, while depth-resolved 3D images are reconstructed from photon flux measurements centered at 810nm. We show that, in the low parametric-gain regime, seeding increases the photon flux, enabling volumetric imaging with a spectrometer rather than single-photon detectors. Our analysis further shows that, under the conditions considered, seeding provides a more effective route to sensitivity enhancement than increasing the parametric gain.
