Vortex lattices with transverse-mode-locking states switching in a large-aperture off-axis-pumped solid-state laser

Gong, Mali

Vortex lattices with transverse-mode-locking states switching in a large-aperture off-axis-pumped solid-state laser

Posted on 2018-11-05 - 20:30

We report the optical vortex lattices (OVL) beams with phase-singularity arrays from a large-aperture diode-pumped Yb:CALGO laser. A distinct transverse-mode-locking (TML) effect is found in the OVL formation via controlling pump aperture and off-axis displacement. Various OVL patterns with vortex arrays can be generated in a TML state. While in a non-TML state, the emission is always a high-order Hermite-Gaussian or Ince-Gaussian mode. Interestingly, a stable TML can be started from a non-TML state by an intentionally induced perturbation. Based on TML principle, a new closed-form expression is theoretically proposed for interpreting both the transverse patterns and the evolution principle of various OVL modes, showing good agreements with the experimental results.

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Shen, Yijie; Wan, Zhensong; Fu, Xing; Gong, Mali (2018). Vortex lattices with transverse-mode-locking states switching in a large-aperture off-axis-pumped solid-state laser. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4174121.v1

https://doi.org/10.6084/m9.figshare.c.4174121.v1

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