We propose a new concept for wavefront curvature sensing, which is based on diffraction grating and fractional Fourier transforms systems. An explicit formula is derived expressing the wavefront curvature, and the wavefront shape can also be retrieved rapidly. The experimental setup is presented and numerical simulations show the validity of the proposed method.
- Adaptive optics
- Diffraction and gratings
- Fractional Fourier transforms
- Optical sensing
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics