Three Kinds of Dry

Random Lasing in a Pigment Film Through Fourteen Hours of Drying

A research poster from the School of Underlying Conditions pumps six dye-doped rutile pigment films at six fluences every hour for fourteen hours after draw-down, alongside hourly coherent-backscattering measurements of the transport mean free path. The lasing threshold falls smoothly with the mean free path as the films dry, while the shot-to-shot stability of the lasing modes switches on at 7.4 hours, after the films are touch-dry (2.9 hours) and after their mass has stopped changing (5.2 hours).

@misc{slop_asreqm,
  author       = {Brynjar Obiora and Ragnhild Uzoma},
  title        = {Three Kinds of Dry: Random Lasing in a Pigment Film Through Fourteen Hours of Drying},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.asreqm},
  url          = {https://slop.university/outputs/slop-poster-random-lasing-in-asreqm/},
  version      = {1.0},
  note         = {Research poster},
}