1. Lasing characteristics of a diode-pumped Nd3+: CaGdAlO4crystal
- Author
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G. Huber, A A Lagatskii, V. F. Kleptsyn, V. G. Shcherbitskii, V G Ostroumov, N. V. Kuleshov, and V. P. Mikhailov
- Subjects
Materials science ,Absorption spectroscopy ,business.industry ,Slope efficiency ,Statistical and Nonlinear Physics ,Laser pumping ,Laser ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention ,Crystal ,Optics ,law ,Stimulated emission ,Electrical and Electronic Engineering ,business ,Luminescence ,Lasing threshold - Abstract
A new Nd3+-doped CaGdAlO4 laser crystal was investigated. This crystal was grown by the Czochralski method. The atomic concentration of Nd3+ in the melt was 2%. The absorption and luminescence spectra were analysed and the Stark structure of the upper and lower active levels was determined. The lifetime of the upper level was ~140 μs. The stimulated emission cross section at the 1078 nm wavelength was 1.1 × 10-19cm2 for the E∥c polarisation. A GaAlAs diode, with an output power of 3 W emitting at the wavelength 806.5 nm, was used as the pump source. The slope efficiency was 37% at the 1078 nm wavelength when the output mirror transmission was 5%. The output radiation power of the crystal laser was 360 mW when the absorbed pump power was 1.29 W.
- Published
- 1997
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