Extended Data Fig. 3: Testing of laser power stability and photostability of 27-nm NaLuF4:Tm(15%) nanocrystals.
From: Optical nonlinearities in excess of 500 through sublattice reconstruction
a, Ten-minute power stability test of the single-mode 1,064 nm laser used for photon avalanche measurements. b, Record of laser power intensity fluctuation as the gradient neutral density filter is rotated by small increments (0.2°) during photon avalanche testing. c, Ten-min photostability of 27-nm NaLuF4:Tm(15%) nanocrystals under two different excitation intensities at three different locations. d, Bidirectional scanning results showing photon avalanching luminescence characteristics of 27-nm NaLuF4:Tm(15%) nanocrystals without hysteresis.
