Title

Site selective upconversion in Nd3+:KLiYF5

Abstract

Site selective upconversion of Nd3+:KLiYF5 is reported in dilute (0.2% molar) and concentrated (3.4% molar) crystals. On the basis of site selective excitation spectroscopy, the mechanism for upconversion is determined as being due to the sequential absorption of two photons. The excitation spectrum is shown to be composed of features resonant with each of the two stages of excitation. The dilute sample shows site selective upconversion fluorescence throughout the excitation range. For the more concentrated sample, energy transfer amongst the lower states equalises the population of the sites when shelved in the metastable 4F3/2 state so that site selectivity only occurs during the second absorption stage.

Publication Date

1-15-1997

Publication Title

Optics Communications

Volume

134

Issue

1-6

Number of Pages

398-406

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0030-4018(96)00517-2

Socpus ID

0030834765 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0030834765

This document is currently not available here.

Share

COinS