Spectroscopic properties, energy transfer dynamics, and laser performance of thulium-holmium doped laser systems

Book · Sat Dec 31 04:00:00 EST 1994

OSTI ID:390196

Kalisky, Y ^[1]; Rotman, S R ^[2]; Boulon, G; Pedrini, C; Brenier, A ^[3]

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1. Nuclear Research Centre-Negev, Beer-Sheva (Israel). Laser Dept.
2. Ben Gurion Univ. of the Negev, Beer-Sheva (Israel). Dept. of Electrical and Computer Engineering
3. Univ. Lyon I, Villeurbanne (France). Lab. de Physico-Chimie des Materiaux Luminescents

Spectroscopic studies using laser induced fluorescence and numerical modeling of energy transfer and back transfer mechanism are reported in Er:Tm:Ho:YLF, Cr:Tm:Ho:YAG and Cr:Tm:YAG laser crystals at various temperatures (10 K-300 K). Direct energy transfer from Tm{sup 3+} excited states to Ho{sup 3+} {sup 5}I{sub 7} emitting level was observed and analyzed both in YAG and YLF. Further analysis of Cr{sup 3+} and Tm{sup 3+} time-dependent emission curves indicate a strong correlation of chromium-thulium pairs. Pulsed operation of holmium laser at high temperature will be presented.

• OSTI ID: 390196
• Report Number(s): CONF-940121--; ISBN 0-8194-1433-6
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ABSORPTION SPECTRA
ALUMINIUM OXIDES
DOPED MATERIALS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
FERRITE GARNETS
HOLMIUM IONS
LASER MATERIALS
NUMERICAL ANALYSIS
OPTICAL PUMPING
PERFORMANCE
SOLID STATE LASERS
SPECTROSCOPY
THEORETICAL DATA
THULIUM IONS
YTTRIUM COMPOUNDS