Preparation and properties of silica-based optical glasses containing rare-earth- and chromium-doped nano-particles

Sponsor: Czech Science Foundation

Principal investigator: Ivan Kašík, Ph.D.

Members: Jan Aubrecht, Ph.D.; Volodymyr Bobuský; Jan Boháček, Msc.; Anirban Dhar, Ph.D.; Vlastimil Matějec, Ph.D.; Jan Mrázek, Ph.D.; Jitka Pedlíková, MSc.; Pavel Peterka, Ph.D.; Ondřej Podrazký, Ph.D.; Marie Pospíšilová, Ph.D.

From: 2010-01-01

To: 2013-12-31

The project focused on methods of preparation of novel thulium-doped nano-crystalline spinels and chromium-alumina nano-particles embedded in silica matrices with the aim to enhance their fluorescence properties.

Advance in sol-gel method was reached leading to preparation of novel optical nanomaterials. These materials were based on high-temperature resistant ceramic RE2Ti2O7 (RE = Tm3+, Er3+, Eu3+, Dy3+, Yb3+, Nd3+ and Y3+) or (Erx-Yby-Y1-x-y) 2Ti2O7 nanoparticles embedded into silica or doped-silica matrices. These materials are suitable for processing in silica or silicate optical fibers and some doped fibers have been employed for investigation of Tm-doped fiber lasers.
Due to the tailored structure containing nanoparticles they exhibit enhanced luminescence properties (intensive fluorescence and longer lifetimes); they were suitable for optical cores of optical fibers.
This concept can serve as a generic approach to preparation of active fibers which can be effectively performed in fiber lasers of variety of emission wavelength in dependence on RE composition applied.


  1. J. Mrázek, L. Špaňhel, M. Surýnek, M. Potel, V. Matějec, Crystallization properties of RE-doped (RE = Eu, Er, Tm) Zn(2)TiO(4) prepared by the Sol-gel method, Journal of Alloys and Compounds 509 (2011) 4018-4024.
  2. DharA., Kašík I., Dussardier B., Podrazký O., Matějec V.: Preparation and properties of Er–doped ZrO2 nanocrystalline phase-separated preforms of optical fibres by MCVD process. International Journal of Applied Ceramic Technology 9 (2012) 341-348.
  3. J. Mrazek, M.Surynek, S. Bakardijeva, J. Bursik, I. Kasik, V. Matejec, Synthesis and crystallization mechanism of europium-titanate Eu2Ti2O7, Journal of Crystal Growth, in print
  4. P. Peterka, P. Honzátko, M. Becker, F. Todorov, M. Písařík, O. Podrazký, I. Kašík, Monolithic Tm-doped fiber laser at 1951nm with deep-UV femtosecond-laser-induced FBG pair, IEEE Photonics Technology Letters 25 (2013) 1623-1625
  5. A. Dhar, I. Kašík, O. Podrazký, V. Matějec, Fabrication and properties of Er-doped nanocrystalline phase-seperated optical fibers, Electrical and Electronic Engineering 11 (2013) 29-35
  6. I.Kašík, V.Matějec, O.Podrazký, P.Peterka, J.Mrázek, New trends in preparation of preforms by the MCVD method (Nové trendy v přípravě preforem metodou MCVD), Jemná mechanika a optika (Fine mechanics and optics) 55 (2010) 102-106

IPE carries out fundamental and applied research in the scientific fields of photonics, optoelectronics and electronics. In these fields, IPE generates new knowledge and develops new technologies.

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