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Laser complex amplitude measurement using transverse translation-defocus diversity phase retrieval

JIAHE MENG1, WENBO JING1,* , BINGKUN HUANG1, MEIHUI LIANG1, DONGJIE ZHAO2, KAI YAO2

Affiliation

  1. School of Opto-electronic Engineering, Changchun University of Science and Technology, Jilin 130022, China
  2. School of Electronics and Information Engineering, Changchun University of Science and Technology, Jilin 130022, China

Abstract

In this paper, to effectively constrain the phase reconstruction, we demonstrate the use of Transverse Transla-tion-Defocus Diversity Phase Retrieval (TTDDPR)as an approach for measuring the phase of the laser. The decomposed sub apertures are used to generate adequately sampled intensity patterns, a defocus plane is introduced to increase the amount of prior information for phase reconstruction. An optimization constrained by their joint influence is then em-ployed to retrieve the phase. The simulation validation of the method is presented to measure the laser complex ampli-tude and the results demonstrated the feasibility and precision of the proposed method..

Keywords

Laser beam quality, Phase retrieval, Phase diversity, Inverse problems.

Submitted at: Aug. 19, 2024
Accepted at: April 15, 2025

Citation

JIAHE MENG, WENBO JING, BINGKUN HUANG, MEIHUI LIANG, DONGJIE ZHAO, KAI YAO, Laser complex amplitude measurement using transverse translation-defocus diversity phase retrieval, Journal of Optoelectronics and Advanced Materials Vol. 27, Iss. 3-4, pp. 100-106 (2025)