Frequency upconversion involving triads and quartets of ions in a Pr3+/Nd3+ codoped fluoroindate glass


Autoria(s): Falcão-Filho, Edilson L.; Araújo, Cid B. de; Messaddeq, Younes
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

15/09/2002

Resumo

Frequency upconversion (UC) processes involving energy transfer (ET) among Nd 3+ and Pr 3+ ions in a fluoroindate glass are reported. In a first experiment, the excitation of Pr 3+ [transition 3H 4→ 1D 2] and of Nd 3+ [transition 4I 9/2→( 2G 7/2+ 4G 5/2)] was achieved with a dye laser operating in the 575-590 nm range. In a second experiment, the Nd 3+ ions were excited with the second harmonic of a Nd: YAG laser at 532 nm. The ET processes leading to UC in both experiments were studied by monitoring the blue fluorescence decay at 480 nm due to the transition 3P 0→ 3H 4 in Pr 3+. In the more relevant UC process, quartets of ions (Nd-Nd-Pr-Pr) are excited due to absorption of three laser photons by two Nd 3+ ions which transfer their energy to two Pr 3+ ions. Each Pr 3+ ion promoted to the 3P 0 level decays to the ground state emitting one photon in the blue region. This conclusion was achieved investigating the dependence of the UC fluorescence intensity as a function of laser intensity, samples concentrations, and temporal behavior of the UC signal. Other UC processes involving nonisoionic groups of three ions are also reported. © 2002 American Institute of Physics.

Formato

3065-3070

Identificador

http://dx.doi.org/10.1063/1.1501757

Journal of Applied Physics, v. 92, n. 6, p. 3065-3070, 2002.

0021-8979

http://hdl.handle.net/11449/130627

10.1063/1.1501757

2-s2.0-84861434224

2-s2.0-84861434224.pdf

Idioma(s)

eng

Relação

Journal of Applied Physics

Direitos

closedAccess

Palavras-Chave #Blue fluorescence #Co-doped #ET process #Fluorescence intensities #Fluoroindate glass #Frequency up-conversion #Laser intensities #Laser photons #ND : YAG lasers #Second harmonics #Temporal behavior #Dye lasers #Energy transfer #Experiments #Glass #High energy physics #Neodymium #Neodymium lasers #Photons #Ions
Tipo

info:eu-repo/semantics/article