Excited state absorption in thulium doped YVO4 crystals |
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| Authors: | R. Lisiecki W. Ryba-Romanowski C. Koepke K. Wiśniewski D. Pivatkowski |
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| Affiliation: | (1) Institute of Low Temperature and Structure Research , Polish Academy of Sciences, ul. Okólna 2, 50-950 Wrocław, Poland;(2) Institute of Physics, Nicolaus Copernicus University, Grudzivadzka 5, 87-100 Toruń, Poland |
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| Abstract: | Excited state absorption (ESA) of Tm3+ ions in YVO4 crystal was measured using a pump and probe technique. The measurements have been performed in the wide spectral range in both the near infrared and visible region between 6000 cm-1 (NIR) and 24000 cm-1 (VIS). ESA absorption cross section spectra have been calculated for transitions from the 3 F 4 and 3 H 4 states of Tm3+ and compared to those evaluated experimentally. The excited state absorption in YVO4:Tm3+ should not influence the laser operation related to the 3F4→3H6 transition around 1900 nm, but it will be a significant loss factor for a potential laser action associated with the 3H4→3F4 transition around 1.48 μm. PACS 42.55.Xi; 42.62.Fi |
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