Crystal growth, characterization and structure refinement of neodymium[sup 3+] doped gehlenite, a new laser material (Ca[sub 2]Al[sub 2]SiO[sub 7])
- CNRS-URA1466, Paris (France). Lab. de Chimie Appliquee de l'Etat Solide
In order to find new Nd[sup 3+] laser materials pumpable by laser diode, gehlenite (Ca[sub 2]Al[sub 2]SiO[sub 7]) was chosen as a host matrix for neodymium ions. Large single crystals of Ca[sub 2[minus]x] Nd[sub x] Al[sub 2+x] Si[sub 1[minus]x] O[sub 7] (0 < x < 0.3) were obtained by Czochralski and floating zone methods. The main characteristics of these crystals (crystal perfection, thermal and mechanical behavior, optical properties...) were determined. The structure refinement revealed a structural disorder, occurring both on position and distribution of ions around Nd[sup 3+] and resulting in a broadening of the absorption bands. This means that less effort is required for diode laser pumping, and the laser effect has been observed. Therefore, Nd[sup 3+] doped Ca[sub 2]Al[sub 2]SiO[sub 7] appears as a good candidate as diode pumped laser.
- OSTI ID:
- 7173708
- Journal Information:
- Materials Research Bulletin; (United States), Vol. 29:7; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
CRYSTAL GROWTH
GRAIN REFINEMENT
PHYSICAL PROPERTIES
CALCIUM COMPOUNDS
LASER MATERIALS
NEODYMIUM LASERS
SILICATES
CZOCHRALSKI METHOD
OPTICAL PUMPING
SEMICONDUCTOR LASERS
ZONE MELTING
ALKALINE EARTH METAL COMPOUNDS
CRYSTAL GROWTH METHODS
LASERS
MATERIALS
MELTING
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PUMPING
SEMICONDUCTOR DEVICES
SILICON COMPOUNDS
SOLID STATE LASERS
426002* - Engineering- Lasers & Masers- (1990-)
360602 - Other Materials- Structure & Phase Studies
360606 - Other Materials- Physical Properties- (1992-)