Abstract
Coherent Fiber Bundels (CFB) enable ultrathin lensless endoscopes, but suffer from phase distortions. Currently spatial light modulators are used for phase conjugation enabling 3D imaging, without distal optics. We introduce diffractive optical elements (DOE) for aberration correction. DOEs made by 2-photon lithography are used to correct static phase distortions and enable direct transfer of holograms for 3D imaging. Furthermore, random DOEs can code 3D object information in 2D intensity speckle patterns, which are decoded using neural networks. Both approaches enable single shot 3D imaging, in a compact and robust system with diameters below 500 µm for deep brain imaging.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
