Multi-frame algorithm with deformable mirror

作者：Huang Linhai^*; Ning Yu; Yang Huafeng; Rao Changhui; Jiang Wenhan

来源：Acta Optica Sinica, 2009, 29(6): 1443-1448.

DOI：10.3788/AOS20092906.1443

• Deformable mirror
• Deformable mirrors
• Far field
• Far-field intensity
• G-S algorithms
• Gerchberg-Saxton
• Light wavelengths
• Multi-frame
• Multi-frame G-S phase retrieval algorithm
• Near-field
• Novel methods
• Numerical simulation
• Phase distribution
• Phase-retrieval
• Residual error
• Root Mean Square
• Simulated results

In order to obtain the near-field phase distribution by using the far field intensity information, a multi-frame algorithm is proposed. It is a phase-retrieval algorithm which carries out the original Gerchberg-Saxton (G-S) algorithm by using more than one far field, and the new far fields are generated by adding prescient aberrations to the unknown phase. A novel method to achieve the multi-frame G-S algorithm by using the deformable mirror (DM) is proposed, and its feasibility is certified by numerical simulations and experiments. The simulated results further imply that the multi-frame G-S algorithm is capable of recovering the atomspheric aberrations within 50 iteration loops, on condition that 4 DM surfaces are utilized to build the new far fields, and the root mean square average of residual errors between recovered phases and true phases is less than 0.005 λ, with λ as the light wavelength.

• 出版日期2009
• 单位中国科学院大学