Upconversion intensity and multiphonon relaxation of Er3+-doped glasses

Setsuhisa Tanabe; Kazuyuki Hirao; Naohiro Soga; Teiichi Hanada

doi:10.1117/12.46042

1 August 1991 Upconversion intensity and multiphonon relaxation of Er3+-doped glasses

Setsuhisa Tanabe, Kazuyuki Hirao, Naohiro Soga, Teiichi Hanada

Proceedings Volume 1513, Glasses for Optoelectronics II; (1991) https://doi.org/10.1117/12.46042
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

Abstract

The upconversion fluorescence properties of Er3+ ions were studied for several glasses in the systems of fluoride, fluorophosphate, and oxide. As an excitation source, the infrared radiation of a GaAlAs laser diode ((lambda) equals 802 nm) was used. A green emission due to 4S3/2-4I15/2 transition could be observed not only for fluoride glasses but also for some oxide glasses composed of heavy metal ions with 30 mW excitation. It was found from the photon sideband spectra that the upconversion intensity was influenced by the energy of phonons coupled with the rare-earth ions and that the energy almost corresponded to the stretching vibration in each glass. The temperature dependence of upconversion intensity was large for the fluoride system, while it was small for the fluorophosphate system. These tendencies could be well explained by considering the temperature dependence of the multiphoton relaxation rate, which is a function of the phonon energy consumed during the nonradiative decay. The results were discussed combined with those of 151Eu-Mossbauer spectroscopy on the local structure and covalency of rare- earth ions in these glasses.

Citation Download Citation

Setsuhisa Tanabe, Kazuyuki Hirao, Naohiro Soga, and Teiichi Hanada "Upconversion intensity and multiphonon relaxation of Er3+-doped glasses", Proc. SPIE 1513, Glasses for Optoelectronics II, (1 August 1991); https://doi.org/10.1117/12.46042

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available