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1

Electron Spin Resonance Study of Nd^{3+} and Er^{3+} Ions in YAlO_{3}

100%

Jabłoński R., Frukacz Z.

Acta Physica Polonica A

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1996

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vol. 90

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issue 2

339-343

EN

In this paper we present the results of ESR and photo-ESR measurements on YAlO_{3}(YAP) single crystals and powder samples doped purposely with about 1 at.% Nd^{3+} and undoped crystals in which Er^{3+} was observed as residual dopant. The ESR measurements were carried out at X-band spectrometer in 4-300 K temperature range. The photo-ESR was performed at 5 K using a mercury arc lamp. For the Nd^{3+} doped crystals the intensity of ESR signal decreased about 2 times during illumination conditions. Moreover, the calculations of the g tensor and A hyperfine structure parameters for Nd^{3+} and Er^{3+} were carried out.

2

Spectroscopic and Laser Properties of Different Materials Doped with Pr^{3+} Ions

61%

Mierczyk Z., Kaczmarek S., Kopczyński K., Frukacz Z., Pracka I., Łukasiewicz T.

Acta Physica Polonica A

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1996

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vol. 90

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issue 2

407-410

EN

Examined praseodymium doped crystals with 1 at.% of Pr^{3+} ions for Y_{3}Al_{5}O_{12} (YAG), SrLaGa_{3}O_{7} (SLGO) hosts and 3 at.% of Pr^{3+} ions for YAlO_{3} (YAP) hosts were produced using Czochralski method. The luminescence for the range of 200÷800 nm and absorption spectra for a wide range of 200÷6000 nm, for Pr^{3+}:YAG, Pr^{3+}:SLGO and Pr^{3+}:YAP crystals have been measured. A free-running laser emission of λ=0.744 μm for Pr:YAG and λ=0.729 μm for Pr:SLGO for two different transmissions of output mirrors has been obtained.

3

Possibility of Gamma-Induced Sensibilization Process in Rare-Earth Doped Yag Crystals

61%

Kaczmarek S., Matkovskii A., Mierczyk Z., Kopczyński K., Sugak D., Durygin A., Frukacz Z.

Acta Physica Polonica A

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1996

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vol. 90

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issue 2

285-293

EN

The influence of gamma irradiation on optical and lasing properties of Nd:YAG, Er:YAG and CTH:YAG single crystals was studied. The increase in optical output was established for rods without thermal annealing. The possible mechanisms of radiation sensibilization are discussed.

4

Modelling of Blue Wavelength Praseodymium Waveguide Lasers

61%

Malinowski M., Mossakowska-Wyszyńska A., Piramidowicz R., Szczepański P., Tyszka-Zawadzka A., Frukacz Z., Pracka I.

Acta Physica Polonica A

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2000

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vol. 97

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issue 2

295-313

EN

Emission and absorption spectra, lifetimes, and branching ratios in the blue spectral region have been experimentally determined for numerous oxide, fluoride and phosphate materials doped with Pr^{3+} ions. The emission cross-sections have been evaluated using the principle of reciprocity. A theoretical model allowing a prediction of the blue lasing characteristics of the praseodymium activated waveguide structures has been developed and employed to the investigated materials.

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4 Acta Physica Polonica A

1 2000

3 1996

4 Frukacz Z.

2 Kaczmarek S.

2 Kopczyński K.

2 Mierczyk Z.

2 Pracka I.

1 Durygin A.

1 Jabłoński R.

1 Malinowski M.

1 Matkovskii A.

1 Mossakowska-Wyszyńska A.

1 Piramidowicz R.

1 Sugak D.

1 Szczepański P.

1 Tyszka-Zawadzka A.

1 Łukasiewicz T.

Electron Spin Resonance Study of Nd^{3+} and Er^{3+} Ions in YAlO_{3}

Spectroscopic and Laser Properties of Different Materials Doped with Pr^{3+} Ions

Possibility of Gamma-Induced Sensibilization Process in Rare-Earth Doped Yag Crystals

Modelling of Blue Wavelength Praseodymium Waveguide Lasers