Chinese Optics Letters, Volume. 22, Issue 11, (2024)

Direct generation of arbitrary complex fields from a ring laser resonator [Early Posting]

Hu Cong, Xiao Yu, Peng Hao, xiahui tang
Author Affiliations
  • Huazhong University of Science and Technology
  • China
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    On-demand and real-time generation of arbitrary complex fields directly from the laser source holds significant appeal for a myriad of applications. In this letter, we demonstrate a novel ring laser configuration capable of dynamically generating arbitrary transverse fields. In a ring laser resonator, two cascaded phase modulations are utilized, which permits the control of two beams with high efficiency and high fidelity. The zeroth-order beam is a fundamental Gaussian field that self-reproduces itself in the resonator. The first-order beam serves as the desired output field, which is separated from the self-reproduction mode to facilitate the on-demand manipulation of amplitude and phase. In the verification experiments, a series of typical Hermite-Gaussian (HG) modes, Laguerre-Gaussian (LG) modes, flat-top mode, and amplitude-only pattern “A” are generated from the ring laser configuration. This innovative ring laser resonator may open up new perspectives for the design of structured-light lasers, with potential impacts in applications such as particle manipulation, advanced microscopy, and next-generation optical communication.

    Paper Information

    Manuscript Accepted: May. 31, 2024

    Posted: Jun. 11, 2024

    DOI: COL-0421