Fourier transform digital holographic adaptive optics imaging system.
Fourier transform digital holographic adaptive optics imaging system.
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DOI：
10.1364/ao.51.008449
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发表时间：
2012-12-10
期刊：
影响因子：
1.9
通讯作者：
Kim MK
中科院分区：
文献类型：
--
作者：
Liu C;Yu X;Kim MK
提出了一种傅里叶变换数字全息自适应光学成像系统及其基本原理。CCD被精确地放置在眼球透镜瞳孔的傅里叶变换平面上。除了眼睛晶状体本身外，光学元件引入的球面曲率被消除了。CCD也在目标的像面上。直接记录系统的点扩散函数，便于确定正确的导星全息图。此外，光信号在CCD处会更强，特别是对于相位像差传感。避免了数值传播。传感器孔径与分辨率无关，开启了使用低相干或非相干照明的可能性。系统变得更加高效和灵活。虽然它的目的是眼科使用，它也显示出潜在的应用在显微镜。仿真和实验结果验证了该系统的鲁棒性和可行性。
A Fourier transform digital holographic adaptive optics imaging system and its basic principles are proposed. The CCD is put at the exact Fourier transform plane of the pupil of the eye lens. The spherical curvature introduced by the optics except the eye lens itself is eliminated. The CCD is also at image plane of the target. The point-spread function of the system is directly recorded, making it easier to determine the correct guide-star hologram. Also, the light signal will be stronger at the CCD, especially for phase-aberration sensing. Numerical propagation is avoided. The sensor aperture has nothing to do with the resolution and the possibility of using low coherence or incoherent illumination is opened. The system becomes more efficient and flexible. Although it is intended for ophthalmic use, it also shows potential application in microscopy. The robustness and feasibility of this compact system are demonstrated by simulations and experiments using scattering objects.