Power scaling of diode-pumped Er:Y<sub>2</sub>O<sub>3</sub> ceramic laser at 2.7 μm

Ding, Manman; Li, Xuanxi; Wang, Fei; Shen, Deyuan; Wang, Jun; Tang, Dingyuan; Zhu, Heyuan

doi:10.35848/1882-0786/ac6da3

Cited by 9 publications

(8 citation statements)

References 32 publications

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“…An Er:Y 2 O 3 ceramic which was grown in the house via coprecipitation with an Er 3+ doping level of 7.0 at% and length 13.5 mm was used as the gain medium. Furthermore, details can be found in [25]. The ceramic was water-cooled using a copper heat sink maintained at a temperature of 15 °C to alleviate thermal loading.…”

Section: Methodsmentioning

confidence: 99%

High-power Er:Y2O3 ceramic laser with an optical vortex beam output at ∼ 2.7 μm

Ding

Wang

Wang³

et al. 2023

Front. Phys.

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We report on the direct generation of the high-power optical vortices at ∼2.7 μm from an Er:Y2O3 ceramic laser end-pumped by an annular pump beam using a simple capillary fiber-based pump beam conditioning scheme. Taking advantage of the thermal gradient on the gain medium and mode matching between the pump and oscillating modes, vortex beams with a controllable topological charge order of l = 1 and l = 2 were successfully achieved. The laser yields 4.65 W of output power at an absorbed power of 19.8 W, corresponding to a slope efficiency of 25.9% with respect to the absorbed pump power. Adaptable beam profiles from a shallow crater-shape to quasi-top-hat intensity patterns were directly produced by actively defining the gain distribution in the ceramic, generating 4-W shallow crater-shape beams and 3.9-W quasi-top-hat beams, corresponding to a slope efficiency of 22.0% and 22.7%, respectively. Such optical vortices and tailored spatial intensity profiles in the 3-µm spectral region will enable novel applications, such as super-resolution molecular spectroscopy and material processing.

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Section: Methodsmentioning

confidence: 99%

High-power Er:Y2O3 ceramic laser with an optical vortex beam output at ∼ 2.7 μm

Ding

Wang

Wang³

et al. 2023

Front. Phys.

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“…for emission in the mid-infrared. Cubic Y 2 O 3 doped with erbium (Er 3+ ) ions is attractive for laser operation in the mid-infrared, at 2.8 µm, according to the 4 I 11/2 → 4 I 13/2 electronic transition [4,5]. 2.8 µm lasers are of practical importance for medical applications.…”

Section: Introductionmentioning

confidence: 99%

“…Mid-infrared laser operation of Er:Y 2 O 3 ceramics was reported [4,5,10,11]. Sanamyan et al designed a diodepumped 2 at.% Er:Y 2 O 3 ceramic laser delivering 380 mW at 2.7 µm with a slope efficiency of 15% [4].…”

Section: Introductionmentioning

confidence: 99%

“…Sanamyan et al designed a diodepumped 2 at.% Er:Y 2 O 3 ceramic laser delivering 380 mW at 2.7 µm with a slope efficiency of 15% [4]. Ding et al developed a diode-pumped 7 at.% Er:Y 2 O 3 ceramic laser with a slab geometry generating 13.4 W at 2.84 µm at the expense of a low slope efficiency of 16% and low beam quality [5]. Recently, Mužík et al studied heavily doped ceramic, 15 at.% Er:Y 2 O 3 , yielding 0.95 W at 2.73 µm with still a moderate slope efficiency of 17.4% [11].…”

Section: Introductionmentioning

confidence: 99%

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Mid-infrared laser operation of (Er_0.07La_0.10Y_0.83)₂O₃ sesquioxide ceramic

Балабанов¹,

Loiko²,

Basyrova³

et al. 2023

Laser Phys. Lett.

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A transparent sesquioxide ceramic (Er0.07La0.10Y0.83)2O3 was fabricated by vacuum sintering at 1780 °C for 3 h with lanthana acting as a sintering additive. It was of single-phase nature (sp. gr. Ia 3 ˉ ) with a close-packed microstructure (average grain size: 17 μm, pore content: 5 ppmv) and high transparency of 80% at 1.1 μm. The La3+ ions induced additional inhomogeneous broadening in the absorption and emission spectra of Er3+ ions. For the 4I11/2→4I13/2 transition, the stimulated-emission cross-section σ SE was 1.06 × 10−20 cm2 at 2719 nm and the luminescence lifetimes of the 4I11/2/4I13/2 states amounted to 2.73/5.91 ms, respectively. A (Er0.07La0.10Y0.83)2O3 ceramic laser generated 300 mW at 2840 nm with a slope efficiency of 27.7% and a laser threshold of only 17 mW.

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“…Under diode-pumping, the output was scaled up to 5.9 W at the expense of a reduced slope efficiency of 27% [11]. Yao et al developed a diode-pumped Er:Lu 2 O 3 ceramic laser generating 6.7 W at 2.85 μm with a slope efficiency of 30.2% [9] and more recently, a diode-pumped Er:Y 2 O 3 ceramic laser enabled an output power of 13.4 W at 2.7 µm at room temperature [12]. By operation at cryogenic temperatures, even higher output power levels are feasible at 2.85 µm [13].…”

Section: Introductionmentioning

confidence: 99%