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Octavian Toma

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National Institute for Laser, Plasma and Radiation Physics, Magurele, Ilfov, .

E-mail: trimite un mesaj.

Pagina web a instituţiei: http://www.inflpr.ro

Nascut(a) in: 1975

Interese: Quantum Electronics, Spectroscopy, Rare-Earth Ions

flag Detalii:
Am absolvit Universitatea Bucuresti, Facultatea de Fizica, in 1998, si am obtinut masteratul in 1999. Din 1999 lucrez in Institutul National de Fizica Laserilor, Plasmei si Radiatiei, Laboratorul de Electronica Cuantica a Solidului.

flag Details:
I graduated the Bucharest University, Faculty of Physics, in 1998, and obtained the Master degree in 1999. Since 1999 I am with the National Institute for Laser, Plasma and Radiation Physics, Solid-State Quantum Electronics Laboratory.

Publicații selectate:

* S. Georgescu, S. Constantinescu, A. M. Chinie, A. S. Stefan, O. Toma, I. Bibicu, Optical and Mossbauer studies on YAG:Eu nanocrystals synthesized by a sol-gel method, SPIE Proceedings, 6785, 2007.

* S. Georgescu, O. Toma, A. Achim, A. M. Chinie, L. Gheorghe, A. Stefan, Optical studies of the partially disordered crystals langasite (La3Ga5SiO14) and langatate (La3Ga5.5Ta0.5O14) doped with Eu3+, SPIE Proceedings, 6785, 2007.

* O. Toma, S. Georgescu, Pump wavelengths for an Er:YAG green-emitting laser, SPIE Proceedings, 6054, 2006.

* S. Georgescu, O. Toma, Energy transfer processes in Er-doped crystals, Physica Status Solidi (c), 2, 2005.

* O. Toma, S. Georgescu, Dynamics of an upconversion-pumped Er:YAG laser exhibiting reabsorption losses, SPIE Proceedings, 5449, 2004.

* S. Georgescu, O. Toma, Modeling of a green upconversion pumped Er: YAG laser, SPIE Proceedings, 5581, 2004.

* S. Georgescu, O. Toma, H. Totia, Intrinsic limits of the efficiency of 3-µm Er:YAG laser, SPIE Proceedings, 5581, 2004.

* A. M. Chinie, A. Stefan, S. Georgescu, O. Toma, E. Borca, M. Bercu, Structural and spectroscopical characterization of RE3+ (RE = Er, Eu, Tb) doped nanocrystalline YAG produced by a sol-gel method, Journal of Optoelectronics and Advanced Materials, 8, 2006.

* S. Georgescu, A. M. Chinie, A. Stefan, O. Toma, Effects of thermal treatment on the luminescence of YAG:Eu nanocrystals synthesized by a nitrate-citrate sol-gel method, Journal of Optoelectronics and Advanced Materials, 7, 2005.

* O. Toma, Emission regimes of a green Er:YLiF4 laser, IEEE Journal of Quantum Electronics, 43, 2007.

* O. Toma, E. Osiac, S. Georgescu, Pump wavelengths for an Er:YLiF4 green-emitting laser, Optical Materials, 30, 2007.

* O. Toma, S. Georgescu, The influence of pump wavelength on Er:YAG green-emitting laser characteristics, IEEE Journal of Quantum Electronics, 42, 2006.

* S. Georgescu, O. Toma, Er:YAG three-micron laser: performances and limits, IEEE Journal of Selected Topics in Quantum Electronics, 11, 2005.

* S. Georgescu, O. Toma, I. Ivanov, Upconversion from the 4I13/2 and 4I11/2 levels in Er:YAG, Journal of Luminescence, 114, 2005.

* O. Toma, S. Georgescu, Dynamics of an upconversion Er:YAG laser with reabsorption losses, Journal of the Optical Society of America B, 21, 2004.

* S. Georgescu, O. Toma, H. Totia, Intrinsic limits of the efficiency of erbium 3-um lasers, IEEE Journal of Quantum Electronics, 39, 2003.

* S. Georgescu, O. Toma, C. Florea, C. Naud, ESA processes responsible for infrared pumped, green and violet luminescence in low concentrated Er: YAG, Journal of Luminescence, 101, 2003.