Influences of focusing conditions on optical poling in lithium niobate using a 1035 nm femtosecond fiber laser

Xin Chen, Chunsheng Xu, Shan Liu, Dawei Liu, Bihui Tan, Yi Zhang, Huan Chen, Yan Sheng, Junli Wang*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    In this study, we demonstrate the optical induction of ferroelectric domain inversion on the −z surface of lithium niobate crystals using a 1035 nm femtosecond fiber laser. We investigate the effects of laser power and focusing parameters on domain morphology. The results revealed that domains exhibit an irregular random distribution at low power, whereas regularly arranged domains were formed near the crystal damage threshold. Furthermore, with sufficiently high power, lens focusing enables the fabrication of uniformly sized domains exceeding 100 µm. The results suggest potential applications for controlling domain morphology and the duty cycle, and fabricating ferroelectric functional devices.

    Original languageEnglish
    Pages (from-to)6212-6217
    Number of pages6
    JournalApplied Optics
    Volume62
    Issue number23
    DOIs
    Publication statusPublished - 10 Aug 2023

    Fingerprint

    Dive into the research topics of 'Influences of focusing conditions on optical poling in lithium niobate using a 1035 nm femtosecond fiber laser'. Together they form a unique fingerprint.

    Cite this