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- W3011676996 abstract "We report, for the first time to our knowledge, a diode-pumped continuous-wave microchip Er,Yb:YMgB 5 O 10 laser. The purpose of this work was to study the growth technique, spectroscopic properties and continuous-wave laser performance of Er 3+ ,Yb 3+ :YMgB 5 O 10 novel crystal. Absorption and luminescence spectra as well as kinetics of luminescence decay were studied. Ytterbium-erbium energy transfer efficiency was determined. The output characteristics (output power, slope efficiency, laser wavelength) of Er 3+ ,Yb 3+ :YMgB 5 O 10 laser were determined. Two intensive absorption bands with peaks centered at 937 nm and 976 nm were observed in the absorption spectra at the wavelength near 1 μm. The maximum value of absorption cross-section was determined to be 1.5·10 –20 cm 2 at 976 nm for polarization E//N g . A number of narrow lines were observed in the absorption spectra in the 1425–1575 nm spectral range (transition 4 I 15/2 → 4 I 13/2 of erbium ions). The lifetime of the upper laser level 4I13/2 of Er3+ ions was determined to be 390 ± 20 μs. The ytterbium-erbium energy transfer efficiency for YMgB 5 O 10 crystal with 2 at.% of Er 3+ and 11 at.% for Yb3+ was close to 84 %. The maximal continuous-wave output power of 0.2 W with slope efficiency of 8 % regarding to absorbed pump power was realized at the wavelength of 1570 nm. With the improvement of cavity parameters the output laser performance of the Er,Yb:YMgB 5 O 10 crystal can be further enhanced. Taking into account high thermal conductivity of ≈ 6.2 W·m –1 ·K –1 , the Er,Yb:YMgB 5 O 10 crystal can be considered as a good gain medium for 1.5 μm lasers for applications in laser rangefinder and LIDAR systems." @default.
- W3011676996 created "2020-03-23" @default.
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- W3011676996 date "2019-12-12" @default.
- W3011676996 modified "2023-10-16" @default.
- W3011676996 title "Continuous-wave Laser on Er,Yb-Codoped Pentaborate Crystal" @default.
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- W3011676996 doi "https://doi.org/10.21122/2220-9506-2019-10-4-301-307" @default.
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