Εξειδίκευση τύπου :	Ανακοίνωση σε συνέδριο
Τίτλος:	On the 4f(2)5d->4f(3) interconfigurational transitions of Nd3+ ions in K2YF5 crystal host
Δημιουργός/Συγγραφέας:	[EL] Κόλλια, Ζωή[EN] Kollia, Zoe [EL] Σαραντοπούλου, Ευαγγελία[EN] Sarantopoulou, Evangelia [EL] Κεφαλάς, Αλκιβιάδης Κωνσταντίνος[EN] Cefalas, Alciviadis Constantinos
Επιμελητής έκδοσης:	Atanasov, PA
Εκδότης:	Spie - International Society Optical Engineering
Τόπος έκδοσης:	BELLINGHAM
Ημερομηνία:	1996
Γλώσσα:	Αγγλικά
ISBN:	0-8194-2466-8
DOI:	10.1117/12.262931
Περίληψη:	The laser induced fluorescence spectrum of K2YF5:Nd3+ (PFYK:Nd) single crystal, pumped by the fluorine F-2 pulsed discharge molecular laser at 157.6 nm, was obtained in the Vacuum Ultraviolet (VUV) region of the spectrum. The fluorescence peaks were assigned to the 4f(2)5d-->4f(3) dipole allowed transitions of the Nd3+ ion. The absorption spectrum of the PFYK:Nd crystal samples in the VUV spectral region was obtained as well. The transitions between the I-4(9/2) ground level of the Nd3+ ion of 4f(3) configuration and the levels of 4f(2)5d configuration were observed for these crystal samples, to our knowledge for first time. The electric crystal field splits all the levels of single and mixed configuration. The number and the spacing of the components depends on the symmetry and the intensity of the crystal field. We found that the 4f(2)5d levels of the Nd3+ ion, split into eight components in the PFYK host lattice. The edge of the 4f(2)5d levels of the Nd3+ ion in the PFYK crystal host was found to be at 54940 cm. Furthermore, we report on the interconfigurational 4f(2)5d-->4f(3) VUV fluorescence characteristics of the PFYK:Nd crystal under excitation from the pulsed discharge F-2 molecular laser operating at 157.6 nm. The concentration of the Nd3+ ions in the crystal sample was 0.1% at. The sample was an optically polished disk having a diameter of 5 mm and thickness of 1.2 mm. The experimental set up consisted mainly of the F-2 pulsed discharge molecular laser, a hydrogen lamp, an XUV-VUV monochromator, (Acton VM502) and the necessary electronic equipment for detecting and recording the spectrum. The laser source delivers 12 mJ per pulse and only 1 mJ, after focusing, was used to excite the crystal samples. The spectra were detected with a resolution better than 0.5 nm.
Όνομα εκδήλωσης:	9th International School on Quantum Electronics - Lasers-Physics and Applications
Ημ/νία έναρξης εκδήλωσης :	1996-09-16
Ημ/νία λήξης εκδήλωσης :	1996-09-20
Τόπος εκδήλωσης:	VARNA, BULGARIA
Τίτλος πηγής δημοσίευσης:	Ninth International School on Quantum Electronics: Lasers-physics and Applications
Τόμος/Κεφάλαιο:	3052
Σελίδες:	235-240
Θεματική Κατηγορία:	[EL] Οπτική. Φώς[EN] Optics. Light
Λέξεις-Κλειδιά:	Vacuum ultraviolet Rare earth ions Dielectric fluoride crystals K2YF5:Nd3+
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© SPIE - INT SOC OPTICAL ENGINEERING
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο