Excited-state absorption of Tm3+-doped single crystals at photon-avalanche wavelengths
Résumé
Excited-state absorption (ESA) spectra calibrated in units of cross sections are reported in the case of Tm3+-doped YAG, YAP, and Y2O3 single crystals around wavelengths at which photon-avalanche absorptions were observed recently. The peak ESA cross sections are compared with those obtained theoretically by using the Judd–Ofelt approach.