Continous Wave Operation of Tm<sub>2</sub>O<sub>3</sub>-Doped Germanate Glass Laser around 2 μm

Yuwan, 邹育婉 Zou; Qing, 王庆 Wang; Yongdong, 张永东 Zhang; Dehua, 李德华 Li; Zhiyi, 魏志义 Wei; Weijun, 令维军 Ling; Jintai, 范金太 Fan; Long, 张龙 Zhang

doi:10.3788/cjl20113804.0402004b

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“…4(a) is the fluorescence spectra under the conditions of 808 nm pumped of Tm 3+ sensitized H O 3+ doped Germanate glass. It is observed that there was an obvious emission band at 1953 nm, which attributes to 5 . Fluorescence intensity gradually increased with the increase of Tm 3+ when Ho 3+ was 0.1 mol %.…”

Section: Physical Performancesmentioning

confidence: 99%

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Effect of Tm3+ Sensitization to Ho3+ Doped GeO2-B2O3-BaF2-Al2O3-ZnO2-Na2O Glass on Spectral Properties

Wang¹,

Yu²,

Tan³

et al. 2014

Asian J. Chem.

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A series of Tm 3+ /Ho 3+ sensitized 65GeO2-7BaF2-10B2O3-4Al2O3-4ZnO2-10Na2O glass samples were synthesized by using high temperature melting method. The spectral properties were systematically studied when Ho 3+ concentration was 0.1, 0.3, 0.5 mol % and Tm2O3 changed from 0.3 to 2.5 mol %. Differential thermal analysis showed that ∆T was higher than 190 ºC, which illustrated this kind of matrix glass have better thermal stability. The absorption cross section peak height, free energy of Ho 3+ from 5 I8 to 5 I7 and emission cross section were calculated according to Mc-Cumber theory. Under the excitation of 808 nm laser diode, fluorescence intensity at 1954 nm reached the highest value when the concentration of Ho 3+ was 0.1 mol % and Tm 3+ was 0.7 mol %. However the fluorescence intensity reduced greatly when Ho 3+ concentration was 0.5 mol % and Tm 3+ exceeded 1.5 mol %. The sensitized function and influence of different Tm 3+ /Ho 3+ doped ion ratios on the spectral properties was studied.

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Section: Physical Performancesmentioning

confidence: 99%

“…Selected Tm 3+ sensitized Ho 3+ co-doped ions due to that the laser output efficiency of Ho 3+ doped glass is relatively low. Ho 3+ /Tm 3+ co-doped is the most effective way to gain 2 µm light, which has important application in medical treatment 5 . The level of transition from 5 I8 to 5 I7 of Ho 3+ can emission 2 µm wavelength.…”

Section: Introductionmentioning

confidence: 99%