Laser Action in Fluorinated Europium Chelates in Acetonitrile

Abstract The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, academia, industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications. This historical review looks at the contribution the UK has made to the advancement of the technology, the development of systems and components and their exploitation over the last 60 years.

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Investigation of Yb:CaWO4 as a potential new self-Raman laser crystal

CrystEngComm ◽

10.1039/d0ce01538e ◽

2021 ◽

Author(s):

Junxian Chen ◽

Liang Dong ◽

Fenfen Liu ◽

Honghao Xu ◽

Junhai Liu

Keyword(s):

Laser Crystal ◽

Laser Action ◽

Raman Laser ◽

Czochralski Method ◽

High Quality ◽

Raman Conversion

High-quality Yb:CaWO4 crystal was grown using the Czochralski method; laser action and self-Raman conversion were demonstrated.

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POF-Based Solar Concentrators Incorporating Dyes and Europium Chelates

Materials ◽

10.3390/ma14102667 ◽

2021 ◽

Vol 14 (10) ◽

pp. 2667

Author(s):

Ander Vieira ◽

Jon Arrue ◽

Begoña García-Ramiro ◽

Felipe Jiménez ◽

María Asunción Illarramendi ◽

...

Keyword(s):

Optical Fibers ◽

Organic Dyes ◽

Radiative Energy ◽

Quantum Yields ◽

Solar Concentrators ◽

Europium Ion ◽

Luminescent Solar Concentrators ◽

Simplifying Assumptions ◽

Europium Chelates ◽

Polymer Optical Fibers

In this paper, useful models that enable time-efficient computational analyses of the performance of luminescent solar concentrators (LSCs) are developed and thoroughly described. These LSCs are based on polymer optical fibers codoped with organic dyes and/or europium chelates. The interest in such dopants lies in the availability of new dyes with higher quantum yields and in the photostability and suitable absorption and emission bands of europium chelates. Time-efficiency without compromising accuracy is especially important for the simulation of europium chelates, in which non-radiative energy transfers from the absorbing ligands to the europium ion and vice versa are so fast that the discretization in time, in the absence of some simplifying assumptions, would have to be very fine. Some available experimental results are also included for the sake of comparison.

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