Fall Research Expo 2020

Optical Ring Lattice Generation from a Microlaser

Laguerre-Gaussian light beams exhibit orbital angular momenta (OAM) associated with an azimuthal phase dependence, which creates a zero intensity field at a phase singularity in the center of the beam. The unique intensity pattern obtained by multiplexing two such beams of different OAM orders allows for optical confinement of ultracold atoms and particles at a given number of azimuthal locations defined by phase singularities. We propose a strategy for the generation of such structured light, also known as an optical ring lattice, with an on-chip microring laser. The number of singularities within the lattice, as well as the resonant frequency, is dependent on the geometry of the laser, and can be adjusted. Here we demonstrate the simulation results for a sixth order optical ring lattice with varying radial polarization.

PRESENTED BY
PURM - Penn Undergraduate Research Mentoring Program
Engineering & Applied Sciences 2023
Advised By
Dr. Liang Feng
PRESENTED BY
PURM - Penn Undergraduate Research Mentoring Program
Engineering & Applied Sciences 2023
Advised By
Dr. Liang Feng

Comments

Hello Lada! Your research project was extremely interesting to read. Your optical lattice emission simulations are extremely detailed and it is interesting to see the difference between the ring arrays when the polarization is shifted. In your conclusion, you state that "by changing the number of sidewall scatters the number of phase singularities in a ring can be manipulated". In what ways can it be manipulated? Would this change your simulations?

 

 

What is the function of the two rows of angular grating on the resonator's outer sidewall? Your graphics are very interesting!