Re-Absorption And Nonradiative Energy Transfer In Vibronic Laser Gain Media

Keywords

Mid-IR Lasers; Rate Equations; Transition Metals

Abstract

Fe:ZnSe and other transition metals have broad upper and lower energy manifolds which give rise to broad absorption and fluorescence bands in the mid-IR spectral region. Energy transfer between Fe2+ ions via re-absorption of fluorescence (due to the spectral overlap of these bands) and phonon-assisted energy transfer (due to the lattice dynamics of ZnSe) becomes more probable with increasing Fe2+ concentration. Here we treat these processes as additional terms in the rate equations which govern the spontaneous decay of the Fe2+ ion. This treatment gives insight into anomalous behavior seen in the thermal lifetime of the Fe:ZnSe system. We also apply the model to other transition metal doped II-VI materials.

Publication Date

1-1-2018

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

10511

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2290822

Socpus ID

85045152729 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85045152729

This document is currently not available here.

Share

COinS