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Photon avalanche up-conversion in holmium doped fluoride glasses

Conference ·
OSTI ID:270333
; ;  [1];  [2]
  1. Argonne National Lab., IL (United States). Chemistry Division
  2. Shanghai Institute of Optics and Fine Mechanics, Shanghai (China)
Photon avalanche green up-conversion emission centered at 545 nm has been observed in Ho{sup 3+} doped and Ho{sup 3+}, Tm{sup 3+} co-doped ZrF{sub 4}-based fluoride glasses when excited near 585 nm which is off resonance with any ground state absorption bands of either Ho{sup 3+} or Tm{sup 3+} ions. Detailed spectral measurements and analysis suggest that the 545 nm emission occurs from the {sup 5}S{sub 2},{sup 5}F{sub 4} states of Ho{sup 3+} that are populated by excited state absorption from the {sup 5}I{sub 7} state of Ho{sup 3+}. Strong cross-relaxation that efficiently populates the {sup 5}I{sub 7} state makes the photon avalanche process possible in this system.
Research Organization:
Argonne National Lab., IL (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
270333
Report Number(s):
ANL/CHM/CP--88838; CONF-9606244--1; ON: DE96013017
Country of Publication:
United States
Language:
English

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