Tri-arm multipinhole interferometer for wavefront measurement and diffractive imaging.
We propose a tri-arm (or Y-shaped) multipinhole (MP) interferometer for wavefront measurement based on a specially designed tri-arm MP plate. We demonstrate that the complex amplitude of a wavefront sampled by the tri-arm MP plate inserted between the object and the detector plane can be extracted directly from the Fourier transform of a far-field diffraction intensity pattern without the need for any iterative algorithm. A form of coherent diffractive imaging based on a rotatable tri-arm MP plate is also demonstrated, which provides a feasible approach for lensless diffractive imaging in real time.
Wei
Gong-Xiang
GX
Department of Physics, Shandong Normal University, Jinan 250014, China.
Lu
Lei-Lei
LL
Guo
Cheng-Shan
CS
Wang
Hui-Tian
HT