SPECTRAL AND LUMINESCENT PROPERTIES OF GLASSES DOPED WITH ERBIUM IONS BASED ON 98MgCaSrBaYAl2F14-2Ва(РО3)2
Annotation
The article is devoted to spectral and luminescent properties of glasses of 98MgCaSrBaYAl2F14-2Ва(PO3)2 composition with ErF3 content 0; 0.1; 0.5 and 1.0 mol.%. Samples of glasses were prepared by high-temperature synthesis in an argon atmosphere. It was found that the matrix of fluoroaluminate glass, has a wide spectral transparency range from 0.2 to 6.7 μm, which indicates the great practical importance of the glassy composition under study as a material for optoelectronics devices. From the infrared transmittance spectra, absorption bands were identified, due to the presence of hydroxyl and phosphate groups, the maxima of which are about 3.0 and 4.7 μm, respectively. It has been established that the fluoroaluminate glassy matrix has a relatively low content of impurities of OH groups. For the samples doped with erbium upon excitation with a wavelength of 487 nm the luminescence spectra were obtained in the spectral range 500–900 nm. The nature of these bands is explained on the basis of a simplified energy diagram of erbium ion in a glassy matrix. Analysis of the concentration dependences of the integral intensities of the luminescence bands was also carried out, in the course of which it was found that a sample containing 0.1 mol. % ErF3 has the maximum efficiency. The 2H11/2→4I15/2 radiative transition was found to be the one mostly exposed to concentration quenching.
Keywords
Постоянный URL
Articles in current issue
- RESONANT AND NON-RESONANT INTERACTION OF SEMICONDUCTOR NANOCRYSTALS WITH LOCALIZED PLASMONS
- LIGHT PROPAGATION IN PLANAR TOTAL INTERNAL REFLECTION WAVEGUIDE WITH QUANTUM WELL
- DETECTION OF DIABETES MELLITUS TYPE II BY INFRARED SPECTROSCOPY AND MULTIVARIATE ANALYSIS
- MULTI-ROTOR UNMANNED AERIAL VEHICLE CONTROL SYSTEM BASED ON HYBRID NEUROREGULATOR
- STABILITY OF NONLINEAR DYNAMICAL SYSTEM MOTION UNDER CONSTANTLY ACTING PERTURBATIONS
- THERMOELECTRIC COOLING MODULE WITH DAMPING CONDUCTOR ON COLD SPAYS
- COMPLEX RESEARCH OF E.coli VITAL ACTIVITY DYNAMICS IN PRESENCE OF TRANSITION METAL IONS
- CHEMICAL MECHANICAL POLISHING OF NONLINEAR OPTICAL ORGANIC CO-CRYSTALS BASED ON AMINOPYRIDINE SERIES
- MICROSTRUCTURE RESEARCH OF FLOAT-TYPE GYRO ROTORS BY SCANNING ELECTRON MICROSCOPE
- APPLICATION OF DIGITAL FACIAL ANTHROPOMETRY (Review paper)
- MODEL OF MULTI-LEVEL DATA STORAGE SYSTEM
- ORTHOGONAL NOISE-LIKE SIGNAL SYMBOLS FOR BROADBAND CHANNEL PROTECTION
- RATIONAL SELECTION OF WORK PERFORMERS FOR INFORMATION SYSTEM DESIGN PROJECTS
- CRITERIA FOR TEXT CONFORMITY TO SCIENTIFIC STYLE
- HIGH-LEVEL SYNTHESIS SYSTEM BASED ON HYBRID RECONFIGURABLE MICROARCHITECTURE
- CONTROL METHODS FOR UPPER EXTREMITY PROSTHESES
- SIGNAL FILTRATION ALGORITHMS FOR ULTRASONIC SENSORS IN OBSTACLE DETECTION DEVICES
- TRANSFER LEARNING FOR IMAGE CLASSIFICATION OF PRIMARY MORPHOLOGICAL ELEMENTS OF SKIN LESIONS
- RELATIVE ORDER OF SAMPLED LINEAR TIME-INVARIANT SYSTEMS
- PARAMETRIC IDENTIFICATION OF SHIP MODEL BY SYMMETRIC MOTIONS AROUND ROLL ANGLE WITH TAUTWIRE REFERENCE POSITION SENSOR
- STUDY OF ELECTROMAGNETIC TORQUE PULSATIONS IN PRECISION SERVO DRIVES WITH SINUSOIDAL PULSE-WIDTH MODULATION
- ULTRAVIOLET SPECTROPHOTOMETRIC METHOD AND WATER HYDROCARBON IMPURITY SENSOR
- HOLOGRAPHIC RECORDING IN PHOTOPOLYMERIZED NANOCOMPOSITE WITH DAST NANOCRYSTALS
- FLUORESCENCE ENHANCEMENT OF SCANDIUM COMPOUNDS WITH2-NAPHTHOYLTRIFLUOROACETONE IN WATER SOLUTION
- PROGRAM CODE OPTIMIZATION OF RELACY RACE DETECTOR LIBRARY