Investigation on the Formation of Laser Transverse Pattern Possessing Optical Lattices

Xin Wang, Zilong Zhang*, Yuan Gao, Suyi Zhao, Yuchen Jie, Changming Zhao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Optical lattices (OLs) with diverse transverse patterns and optical vortex lattices (OVLs) with special phase singularities have played important roles in the fields of atomic cooling, particle manipulation, quantum entanglement, and optical communication. As a matter of consensus until now, the OL patterns are generated by coherently superimposing multiple transverse modes with a fixed phase difference through the transverse mode locking (TML) effect. There are phase singularities in the dark area of this kind of OL pattern, so it is also called OVL pattern. However, in our research, it is found that some high-order complex symmetric OL patterns can hardly be analyzed by TML model. Instead, the analysis method of incoherent superposition of mode intensity could be applied. The OL pattern obtained by this method can be regarded as in non-TML state. Therefore, in this article, we mainly study the distinct characteristics and properties of OL patterns in TML and non-TML states. Through intensity comparison, interferometry, and beat frequency spectrum, we can effectively distinguish OL pattern in TML and non-TML states, which is of significance to explore the formation of laser transverse pattern possessing OL.

Original languageEnglish
Article number801916
JournalFrontiers in Physics
Volume9
DOIs
Publication statusPublished - 3 Jan 2022

Keywords

  • laser transverse patterns
  • optical lattice
  • optical vortex lattice
  • structured light
  • transverse mode locking

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