UV, visible and IR active media based on scheelite-type and colquiriite-type fluoride crystals

Vadim Semashko,Stella Korableva,Alexey Shavelev,Alexander Naumov,Alexey Nizamutdinov,Michail Marisov,S Arakelyan,A Kalachev,A Naumov,A Evlyukhin

doi:10.1051/epjconf/201922001011

Abstract

The experimental results of applying crystal-chemical methods aimed to improving the spectral-kinetic properties of active media based on fluoride crystals with scheelite (LiY1-xLuF4) and colquiriite (LiCa1-xAlF6) structures doped by rare-earth (Ce3+ and Pr3+) and Cr3+ ions are discussed. The energetic and spectral characteristics of lasers based on the active media are presented. The special attention is focused on the prospects of using these lasers in the task of optosensorics, biomedicine, and security systems.

Highlights

Fluoride crystalline active media allow realizing laser action in an unprecedentedly wide range of wavelengths, ranging from medium IR to vacuum ultraviolet
Ultraviolet tunable laser radiation can be obtained either using 4fn-15d-4fn dipole-allowed interconfiguration transitions of trivalent rare-earth ions (REI) in wide-band-gap crystals [2], or by non-linear frequency conversion of the radiation of IR lasers operating on transitions of iron group ions [3]
Radiation from other lasers is used for pumping, and in the second, to do that can be successfully applied a radiation from lamps or laser diodes

Summary

Introduction

Fluoride crystalline active media allow realizing laser action in an unprecedentedly wide range of wavelengths, ranging from medium IR to vacuum ultraviolet. Ultraviolet tunable laser radiation can be obtained either using 4fn-15d-4fn dipole-allowed interconfiguration transitions of trivalent rare-earth ions (REI) in wide-band-gap crystals [2], or by non-linear frequency conversion of the radiation of IR lasers operating on transitions of iron group ions [3].

Results

Conclusion