用于多光束光学相干断层扫描的具有单一1D驱动的微型化2D扫描显微镜
Miniaturized 2D Scanning Microscopy with a Single 1D Actuation for Multi-Beam Optical Coherence Tomography
AI总结：
本研究提出一种利用1D致动器通过机械耦合实现多毫米2D扫描的多光束光纤平台，结合长相干长度OCT以12.6微米分辨率成像，显著提升扫描覆盖并降低成本，适用于紧凑型医疗设备。
摘要：
微型化光学成像系统通常利用二维（2D）致动器在二维视场（FOV）上获取图像。压电管最为紧凑，但通常产生亚毫米级的视场，且难以大规模制造，导致成本高昂。平面压电弯曲致动器（benders）能够实现大得多的致动幅度，且成本大幅降低，但不足以进行2D转向。我们提出了一种多光束光纤扫描平台，通过最大化其正交轴上的机械耦合效应，利用1D致动器生成多毫米级的2D扫描。我们进一步通过演示以螺旋和摆线轨迹驱动的拼接视场来扩展FOV，其中三根光纤被优化为以同步方式共振于相同路径。利用具有长相干长度激光器的光学相干断层扫描，我们以12.6微米的分辨率获取了生物样本的深度复用图像。这种在扫描覆盖范围和成本效益上的多倍改进，有望加速压电光机在诸如内窥镜和头戴设备等紧凑设备以及即时护理点微型化显微镜中的应用。
英文摘要：
Miniaturized optical imaging systems typically utilize 2-dimensional (2D) actuators to acquire images over a 2D field of view (FOV). Piezoelectric tubes are most compact, but usually produce sub-millimeter FOVs and are difficult to fabricate at scale, leading to high costs. Planar piezoelectric bending actuators (benders) are capable of much larger actuations and are substantially lower cost, but inadequate for 2D steering. We presented a multi-beam fiber scanning platform that generated multi-millimeter 2D scans with a 1D actuator by maximizing the mechanical coupling effect in its orthogonal axis. We further expanded the FOV by demonstrating mosaiced fields driven with spiral and cycloid trajectories, where three optical fibers were optimized to resonate with identical paths in synchronicity. Leveraging optical coherence tomography with a long coherence length laser, we acquired depth-multiplexed images of biological samples at 12.6 um resolution. This multi-fold improvement in scanning coverage and cost-effectiveness promises to accelerate the advent of piezoelectric optomechanics in compact devices such as endoscopes and headsets, and miniaturized microscopes at point-of-care.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
