Research Papers

Three- and two-photon upconversion luminescence switching in Tm3+/Yb3+-codoped sodium niobate nanophosphor

[+] Author Affiliations
Kagola Upendra Kumar

Universidade Federal de Alagoas, Instituto de Física, Grupo de Fotônica e Fluidos Complexos, 57072-970 Maceió-AL, Brazil

Wagner Ferreira Silva

Universidade Federal de Alagoas, Instituto de Física, Grupo de Fotônica e Fluidos Complexos, 57072-970 Maceió-AL, Brazil

Kummara Venkata Krishnaiah

Sri Venkateswara University, Department of Physics, Tirupati, Andhra Pradesh 517502, India

Chalicheemalapalli Kulala Jayasankar

Sri Venkateswara University, Department of Physics, Tirupati, Andhra Pradesh 517502, India

Carlos Jacinto

Universidade Federal de Alagoas, Instituto de Física, Grupo de Fotônica e Fluidos Complexos, 57072-970 Maceió-AL, Brazil

J. Nanophoton. 8(1), 083093 (Mar 26, 2014). doi:10.1117/1.JNP.8.083093
History: Received January 22, 2014; Revised February 24, 2014; Accepted February 28, 2014
Text Size: A A A

Abstract.  Intense infrared-to-visible upconversion (UC) emission in Tm3+/Yb3+-codoped sodium niobate (NaNbO3) nanocrystals under resonant excitation at 976 nm is presented. The results showed that by increasing the pump power/intensity, a strong reduction is observed at the 800/480nm emitted intensity ratio, characterizing what can be denominated as laser pump power-induced color tunability or luminescent switching. The physical origin is discussed with a focus on tailoring of luminescent switchers to operate at a large pump power range and, indeed, it is intrinsically associated with the competition of the two- and three-photon UC processes and with highly efficient UC emissions in the investigated material. The effect of Yb3+-ion concentration along with the theoretical aspects on luminescence switching has been investigated. The results obtained here could be useful in the field of sensors and networks for optical processing and optical communications.

Figures in this Article
© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Kagola Upendra Kumar ; Wagner Ferreira Silva ; Kummara Venkata Krishnaiah ; Chalicheemalapalli Kulala Jayasankar and Carlos Jacinto
"Three- and two-photon upconversion luminescence switching in Tm3+/Yb3+-codoped sodium niobate nanophosphor", J. Nanophoton. 8(1), 083093 (Mar 26, 2014). ; http://dx.doi.org/10.1117/1.JNP.8.083093


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.