Mode delocalization in 1D photonic crystal lasers
Related Experiment Video
Updated: Jun 18, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Yeheng Wu1, Kenneth D Singer, Rolfe G Petschek
1Department of Physics, Case Western Reserve University, Cleveland, OH 44106, USA.
Abstract:
We have investigated the formation of in-bandgap delocalized modes due to random lattice disorder as determined from the longitudinal mode spacing in a distributed Bragg laser. We were able to measure the penetration depth, and from transfer matrix simulations, determine how the localization length is altered for disordered lattices. Transfer matrix simulations and studies of the ensemble average were able to connect the gap delocalized modes to localized modes outside of the gap as expected from consideration of Anderson localization, as well as identify the controlling parameters.

