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Title: Mid-infrared luminescence properties of erbium and dysprosium doped lanthanum titanate glasses

Journal Article · · Optical Materials Express
DOI:https://doi.org/10.1364/OME.503121· OSTI ID:2005029

Glasses of composition x RE 2 O 3 -(17− x ) La 2 O 3 -83 TiO 2 were prepared by levitation melting from x  = 0.1 to 9 for RE=Er and at x  =0.1 and 1 for RE=Dy. The glasses have high transition temperature, exhibit low OH, and 1 mm thick discs are transparent out to 6 μ m. Mid-infrared emission lineshapes and lifetimes are comparable to what is seen in tellurite glasses containing Er 3+ and Dy 3+ . For x fixed at 1, the Er 3+ : 4 I 11/2  →  4 I 13/2 transition at 2716 nm has a fluorescence lifetime of 254  μ s and the Dy 3+ : 6 H 13/2  →  6 H 15/2 transition at 2957 nm has a fluorescence lifetime of 9.09  μ s. The results indicate that doped lanthanum titanate glasses offer the thermal stability of a ’hard’ glass with the host properties typically associated with ’soft’ glasses. Problems with the measurement of spectral features in the mid-infrared that could erroneously be assigned as resulting from rare-earth ion emissions are presented and discussed.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Laboratory Directed Research and Development (LDRD) Program; National Aeronautics and Space Administration (NASA); US Air Force Office of Scientific Research (AFOSR)
Grant/Contract Number:
SC0018601; 89233218CNA000001; 20230014DR; 80NSSC19K1288; FA9451-22-2-0016
OSTI ID:
2005029
Alternate ID(s):
OSTI ID: 2007368
Report Number(s):
LA-UR-23-22789
Journal Information:
Optical Materials Express, Journal Name: Optical Materials Express Vol. 13 Journal Issue: 10; ISSN 2159-3930
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

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