Theoretical analysis of the photon avalanche dynamics in Ho 3+-Yb 3+ codoped systems under near-infrared excitation

  • Lahoz F
  • Martín I
  • Alonso D
  • 5


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.


The photon avalanche upconversion mechanism in a Ho3+-Yb3+ system under
near infrared excitation is discussed. Two looping cycles in the
excitation process provide the necessary population of the I-5(7)
intermediate level of Ho3+ ions to achieve the avalanche regime. The
first one takes place between Ho3+ ions, while the second one occurs
between Ho3+ and Yb3+ ions. We present a simplified model of the
process, which only takes into account the ground, intermediate and
emitting levels of Ho3+ and the ground and excited levels of Yb3+ ions.
The rate equations of the system have been solved, and the photon
avalanche regime has been interpreted in terms of gain and loss of the
population of the intermediate level. The model predicts a reduction of
the avalanche pump power threshold when the Yb3+ concentration increases
which is in good agreement with experimental data.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • F. Lahoz

  • I. R. Martín

  • D. Alonso

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free