| Zugriffsnummer | 10010 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Spectroscopic characterisation of the upconversion avalanche mechanism in Pr3+, Yb3+:BaY2F8 |
| Autor(in); Institution |
Osiac, Eugen; Universität Hamburg, Institut für Laser-Physik, Hamburg, GERMANY
Kück, Stefan; 4.11, Radiometrische Einheiten, PTB-Braunschweig
Heumann, Ernst; Universität Hamburg, Institut für Laser-Physik, Hamburg, GERMANY
Huber, Guenter; Universität Hamburg, Institut für Laser-Physik, Hamburg, GERMANY
Sani, E.; Università di Pisa, NEST - INFM, Dipartimento di Fisica, Pisa, ITALY
Toncelli, A.; Università di Pisa, NEST - INFM, Dipartimento di Fisica, Pisa, ITALY
Tonelli, M.; Università di Pisa, NEST - INFM, Dipartimento di Fisica, Pisa, ITALY
|
| Quelle/Jahr | Optical Materials: 24 (2003), 3, 537 - 545 |
| ISSN | 0925-3467 |
| Verlag | Amsterdam [u.a.]: |
| Freie Schlagworte | Laser materials ; Optical properties of bulk materials and thin films ; Pr3+ ; Yb3+ ; BaY2F8 ; avalanche ; upconversion |
| Zusammenfassung | The paper presents the spectroscopic investigation of Pr3+, Yb3+:BaY2F8 and the characteristics of the upconverted emission from the sup.3Psub.0 level due to an avalanche mechanism under infrared excitation around 820 and 870nm. Absorption and emission measurements at 12K were performed in order to refine the Stark level scheme. Room temperature absorption, emission, excitation spectra, and excited state absorption measurements were performed and analysed in order to investigate the properties of the avalanche mechanism and to determine the spectroscopic parameters of this system. Based on the determined spectroscopic parameters a system of differential equations was established in order to describe the observed avalanche mechanism. |
