Browsing by Author "Nicolas S."

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4f2 to 4f5d excited state absorption in Pr3+-doped crystals

Nicolas S.; Descroix E.; Guyot Y.; Joubert M.; Abdulsabirov R.; Korableva S.; Naumov A.; Semashko V. (2001)

We first report one photon classical spectroscopy of Pr3+-doped LiLuF4 single crystals which leads to the energy level diagram for Pr3+ levels in this host and to the 1D2 and 3P0 emitting level lifetimes. Then, excited ...
Potentiality of Pr3+- and Pr3+ + Ce3+ -doped crystals for tunable UV upconversion lasers

Nicolas S.; Descroix E.; Joubert M.; Guyot Y.; Laroche M.; Moncorgé R.; Abdulsabirov R.; Naumov A.; Semashko V.; Tkachuk A.; Malinowski M. (2003)

Gain experiments based on the interconfigurational 4f5d to 4f2 optical transitions in praseodymium-doped fluoride crystals were achieved. The measurements were performed under upconversion pumping of the 4f5d excited ...
Regarding the possibilities of upconversion UV and VUV lasers based on 5d-4f transitions of rare earth ions in wide band gap dielectric crystals

Semashko V.; Joubert M.; Descroix E.; Nicolas S.; Abdulsabirov R.; Naumov A.; Korableva S.; Cefalas A. (2000)

The getting problems of UV and VUV laser action on the base of trivalent rare-earth ions activated crystals and the opportunities of upconversion pumping are discussed. The data of spectroscopical studies of stepwise ...

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