New excited-state absorption measurement technique and application to Pr3+ doped fluorozirconate glass

A new technique for analyzing excited state absorption (ESA) is introduced, in which the relative ESA spectrum is determined directly from fluorescence measurements. This represents, to our knowledge, the first application of the McCumber theory [D. E. McCumber, Phys. Rev. 136, A954 (1964)] to the c...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 1992-03, Vol.60 (9), p.1055-1057
Main Authors: QUIMBY, R. S, ZHENG, B
Format: Article
Language:English
Subjects:
Doped-insulator lasers and other solid state lasers
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new technique for analyzing excited state absorption (ESA) is introduced, in which the relative ESA spectrum is determined directly from fluorescence measurements. This represents, to our knowledge, the first application of the McCumber theory [D. E. McCumber, Phys. Rev. 136, A954 (1964)] to the calculation of excited state absorption spectra. The new technique is used to study ESA transitions from the 1G4 level in Pr3+ doped fluoride glass (ZBLAN). An ESA transition around 1380 nm is found, which shifts the peak of the gain curve for a 1.3 μm Pr3+ fiber amplifier about 10 nm to shorter wavelengths, and gives rise to negative gain for wavelengths longer than 1380 nm. Another ESA transition around 840 nm is found, which is an order of magnitude stronger than the 1 μm ground state absorption.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.106442