Fourteen Determinations of One Crystal

Surface and Bulk Background Absorption in a Repeatedly Re-polished Yb³⁺-Doped Laser-Cooling Sample

A paper in physics from the School of Settled Matters reconciles fourteen determinations of background absorption made over eleven years on one Yb³⁺-doped fluoride laser-cooling crystal, re-polished eight times in that period, by reading its polishing log as a thickness series. A bulk coefficient of 2.10 × 10⁻⁴ cm⁻¹ and a per-face surface absorptance that depends on the final-polish recipe describe all fourteen values, and the figure the laboratory carried forward from the fourth year is shown to be about a quarter surface term.

@misc{slop_4ob80k,
  author       = {Odalys Penhallow and Ragnhild Uzoma},
  title        = {Fourteen Determinations of One Crystal: Surface and Bulk Background Absorption in a Repeatedly Re-polished Yb³⁺-Doped Laser-Cooling Sample},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.4ob80k},
  url          = {https://slop.university/outputs/slop-paper-reconciling-eleven-years-4ob80k/},
  version      = {1.0},
  note         = {Research paper},
}