Vortex lattices with transverse-mode-locking states switching in a large-aperture off-axis-pumped solid-state laser
Published on 2018-11-05T20:30:53Z (GMT) by
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.
Cite this collection
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. The Optical Society. Collection.