講演情報
[14a-K309-3]Visible vector vortex lattices from diode end pumped Pr3+:LiYF4 solid-state laser
〇(PC)Srinivasa Rao Allam1, Takuya Morohashi1, Quan Sheng2, Takashige Omatsu1,2 (1.Chiba Univ., 2.Tianjin Univ.)
キーワード：
Optical vortex laser、Solid-state laser、Pr:YLF laser
Optical visible vortex and vector lattice modes, possessing multiple phase and polarization singularities on the wavefront, have been widely studied in a myriad of fundamental sciences and advanced engineering technologies.
External mode conversion devices, such as computer-controlled spatial light modulators (SLMs) or digital micromirror devices (DMDs) allow the generation of the scalar and vector lattice modes, however, these devices typically require rather expensive and complex experimental setup, and they also have major drawbacks in the power scalability of the system owing to their low damage threshold and significant diffraction loss.
Transverse mode-locking technique in the laser systems is an alternative to directly generate scalar vortex lattice modes from the laser cavity, and it enables the power scaling of the system without any expensive phase modulation devices. In fact, we have successfully demonstrated visible scalar vortex lattices from a diode-pumped Pr3+:LiYF4 (YLF) laser cavity by employing the transverse mode-locking technique.
In this presentation, we herein report, for the first time to the best of our knowledge, the direct generation of vector vortex lattice modes from an ultra-compact diode end-pumped Pr3+:YLF laser (cavity length ~ 8mm) by the transverse mode locking of two orthogonally linear polarized Hermite-Gaussian (HG) modes.
External mode conversion devices, such as computer-controlled spatial light modulators (SLMs) or digital micromirror devices (DMDs) allow the generation of the scalar and vector lattice modes, however, these devices typically require rather expensive and complex experimental setup, and they also have major drawbacks in the power scalability of the system owing to their low damage threshold and significant diffraction loss.
Transverse mode-locking technique in the laser systems is an alternative to directly generate scalar vortex lattice modes from the laser cavity, and it enables the power scaling of the system without any expensive phase modulation devices. In fact, we have successfully demonstrated visible scalar vortex lattices from a diode-pumped Pr3+:LiYF4 (YLF) laser cavity by employing the transverse mode-locking technique.
In this presentation, we herein report, for the first time to the best of our knowledge, the direct generation of vector vortex lattice modes from an ultra-compact diode end-pumped Pr3+:YLF laser (cavity length ~ 8mm) by the transverse mode locking of two orthogonally linear polarized Hermite-Gaussian (HG) modes.