2020/05/09 by Zilong Zhang, Yuan Gao, Zhang, Zilong +3
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Optics (physics.optics) #Orbital Angular Momentum in Optics #Pattern Formation and Solitons (nlin.PS) #Photonic and Optical Devices
paper · pdf · doi:10.48550/arxiv.2005.04350
openalex publication_date 2020/05/09 · openalex created_date 2020/05/13 · openalex updated_date 2026/07/28
Spontaneous transverse mode locking to generate optical vortex arrays is already widely studied for the frequency degenerated transverse modes. While, the mode locking between transverse modes in different orders (non-frequency degenerated families) to achieve spatial stationary beam patterns is rarely reported. The theory of transverse mode locking is discussed. Concepts of general transverse mode locking (G-TML) and restricted transverse mode locking (R-TML) are mentioned. It's experimentally shown that R-TML is possible in microchip cavities with high nonlinearity. More interestingly, some Chinese characters like laser modes can be generated by microchip lasers with this special transverse mode locking effect. And various experimental results and corresponding simulations are presented.