Up-conversion and excitation energy transfer between impurity ions in Pr{sup 3+} : Y{sub 2}SiO{sub 5}, Pr{sup 3+} : Lu{sub 2}SiO{sub 5}, and Pr{sup 3+} : Gd{sub 2}SiO{sub 5} crystals

• Published in: Quantum electronics (Woodbury, N.Y.) N.Y.), 2004-07, Vol.34 (7)
• Main Authors: Znamenskiy, Nikolay V, Manykin, Eduard A, Orlov, Yurii V, Petrenko, Evgenii A, Yukina, Tatiana G, Malyukin, Yurii V, Zhmurin, Petr N, Lebedenko, Aleksandr N, Masalov, Andrei A
• Format: Article
• Language: English
• Subjects: ATOMIC AND MOLECULAR PHYSICS; CHARGED PARTICLES; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; CRYSTALS; ELECTROMAGNETIC RADIATION; EMISSION; ENERGY TRANSFER; ENERGY-LEVEL TRANSITIONS; EXCITATION; FLUORESCENCE; GADOLINIUM COMPOUNDS; IONS; LASER RADIATION; LUMINESCENCE; OPTICAL PUMPING; OXYGEN COMPOUNDS; PHOTON EMISSION; POWER DENSITY; PRASEODYMIUM IONS; PUMPING; QUENCHING; RADIATIONS; RARE EARTH COMPOUNDS; RELAXATION; SILICATES; SILICON COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; YTTRIUM SILICATES
• ISSN: 1063-7818
• DOI: 10.1070/QE2004V034N07ABEH002812

Anti-Stokes fluorescence from the {sup 3}P{sub 0} level of impurity ions was detected in Pr{sup 3+} : Y{sub 2}SiO{sub 5}, Pr{sup 3+} : Lu{sub 2}SiO{sub 5}, and Pr{sup 3+} : Gd{sub 2}SiO{sub 5} crystals non-resonantly pumped by laser radiation with a certain power density. The integrated intensity of the anti-Stokes fluorescence depends nonlinearly on the pump power density. As the atomic concentration of impurity ions was increased from 0.3% to 0.6% and 1.8%, the anti-Stokes fluorescence intensity was saturated due to the concentration quenching of the {sup 1}D{sub 2} term of the impurity Pr{sup 3+} ions. The anti-Stokes fluorescence and quenching of the {sup 1}D{sub 2} term occur due to the cross relaxation of the electronic energy of excited terms of the Pr{sup 3+} ions. (lasers, active media)