Laser diode induced white light emission of gamma-Al2O3 nano-powders

Bilir G., Liguori J.

JOURNAL OF LUMINESCENCE, cilt.153, ss.350-355, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 153
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.jlumin.2014.03.065
  • Dergi Adı: JOURNAL OF LUMINESCENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.350-355
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

A broadband white light emission was observed ranging from 450 to 900 nm from nominally un-doped gamma-Al2O3 nano-powders under 803.5 nm and 975 nm laser diode excitations. The white light emission has a strong dependence on both the environment pressure and the pumping laser power. We spectroscopically characterized this white light emission in a systematic way by collecting spectra, measuring decay- and rise patterns and changing parameters such as pumping power, pumping wavelength, environment temperature and pressure. (C) 2014 Elsevier B.V. All rights reserved.