# Efficient ptychographic phase retrieval via a matrix-free Levenberg-Marquardt algorithm

> Research article (Optics Express, 2021) · cited 13× · AI/ML

**Wikidata**: [openalex:W3171632147](https://www.wikidata.org/wiki/openalex:W3171632147)  
**Source**: https://4ort.xyz/entity/efficient-ptychographic-phase-retrieval-via-a-matrix-free-levenberg-marquardt-algorithm