Photon Quantization in Sm3+ Doped Red Glass Phosphors for Laser-Induced Illumination

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

10 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Article number1700903
Journal / PublicationPhysica Status Solidi (A) Applications and Materials Science
Volume215
Issue number13
Online published18 May 2018
Publication statusPublished - 11 Jul 2018

Abstract

Multi-peak red fluorescence emissions in Sm3+-doped multicomponent-alkali-alkaline-borate (MCAAB) glasses for laser-induced illumination are quantitatively characterized, revealing that the quantum yield (QY) is closely related with the wavelength of pumping sources. Under the excitation of 370 nm UVA-LED, the net emission photon numbers of 1.00 wt% Sm2O3-doped MCAAB glasses are derived to be 58.0 × 1012 cps, and the QY reaches to 25.3% which is about twice as much as 12.2% under 469 nm blue-LED pumping, which is attributed to the better excitability in UVA spectral region. In order to extend the effective excitation range to UVB, Ce3+ is co-doped in Sm3+-doped MCAAB glasses as a sensitizer, which results in an enhancement of Sm3+ excitation intensity by a maximum sensitization factor of 9.16 in the UVB region. Absolute spectral parameters under 453 nm blue laser excitation exhibit that net emission photon numbers are up to 199.4 × 1012 cps in 1.00 wt% Sm2O3 doping case, and QY is solved to be 6.2%. Higher QY of the Sm3+-doped MCAAB glasses is expected to be achieved by further adopting wavelength-matched pumping laser, implying that Sm3+-doped MCAAB glasses is a promising candidate as high power-density light source in special laser-induced illumination.

Research Area(s)

  • laser-induced illumination, quantum yield, red light source, samarium ions

Citation Format(s)