Optical properties and efficient laser oscillation at 2066 nm of novel Tm:Lu_2O_3 ceramics

Антипов, О.Л.; Novikov, A. A.; Zakharov, N. G.; Zinoviev, A.P.

doi:10.1364/ome.2.000183

Cited by 70 publications

(29 citation statements)

References 15 publications

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“…Antipov et al obtained 26 W of output power at a slope efficiency of ß40% with ceramic Tm 3+ :Lu 2 O 3 [71]. Even higher efficiencies exceeding 50% were obtained under Ti:sapphire pumping at watt-level output power [72].…”

Section: B Tm 3+ -Doped Sesquioxide Cw Lasers Around 2 μMmentioning

confidence: 99%

Rare-Earth-Doped Sesquioxides for Diode-Pumped High-Power Lasers in the 1-, 2-, and 3-μm Spectral Range

Kränkel

2015

IEEE J. Select. Topics Quantum Electron.

199

104

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Fabrication, characterization, and laser performance of an Yb:Lu 2 O 3 planar waveguide laser are reported. Pulsed laser deposition was employed to grow an 8 µm-thick Yb-doped lutetia waveguide on a YAG substrate. X-ray diffraction was used to determine the crystallinity, and spectroscopic characterization showed the absorption and emission cross-sections were indistinguishable from those reported for bulk material. When end-pumped by a diode-laser bar an output power of 7.4 W was achieved, limited by the available pump power, at a wavelength of 1033 nm and a slope efficiency of 38% with respect to the absorbed pump power.

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Section: B Tm 3+ -Doped Sesquioxide Cw Lasers Around 2 μMmentioning

confidence: 99%

Rare-Earth-Doped Sesquioxides for Diode-Pumped High-Power Lasers in the 1-, 2-, and 3-μm Spectral Range

Kränkel

2015

IEEE J. Select. Topics Quantum Electron.

199

104

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“…Despite the high quantum defect, high laser emission efficiency can be obtained thanks to the quantum efficiency approaching a value of about 2, due to the cross excitation process between the 3 H 4 → 3 F 4 and the 3 H 6 → 3 F 4 transition . Therefore Tm 3+ ‐doped solid‐state laser materials, such as Tm:Lu 2 O 3 , Tm:CaF 2 , Tm:LuAG, and Tm:YAG, operating in laser sources with emission around 2 μm have been widely investigated . Concerning the Tm:YAG ceramics, there are some advantages as the high efficiency, high power of the pulsed laser used in the Q‐switch and low sensitivity to the temperature.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14] Therefore Tm 3+ -doped solid-state laser materials, such as Tm:Lu 2 O 3 , Tm:CaF 2 , Tm:LuAG, and Tm:YAG, operating in laser sources with emission around 2 μm have been widely investigated. 12,[15][16][17][18][19][20] Concerning the Tm:YAG ceramics, there are some advantages as the high efficiency, high power of the pulsed laser used in the Qswitch and low sensitivity to the temperature. In the last decades, the Tm:YAG ceramics have been one of the most actively studied 2 μm laser gain media and made significant progress.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, microstructure, and optical properties of Tm:Y₃ScAl₄O₁₂ laser ceramics

et al. 2019

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Transparent 4 at.% Tm:Y3ScAl4O12 (Tm:YSAG) laser ceramics were fabricated by solid‐state reaction combined with vacuum sintering method. The 4 at.% Tm:YSAG ceramic sample sintered at 1800°C for 30 hours possesses homogenous microstructure and excellent optical properties, showing a transmittance of 79.3% at 2000 nm. The absorption and emission spectra of the Tm:YSAG ceramics are studied and compared with those of 4 at.% Tm:Y3Al5O12 ceramics. The introduction of Sc3+ greatly affects the energy levels of the Tm3+, causing the disappearance and degeneration of some absorption and emission peaks in the middle infrared region. The laser performance of the 4 at.% Tm:YSAG ceramics is also tested in the Quasi‐continuous‐wave (QCW) mode by pumping with a 790 nm laser diode (LD). A maximum laser output power of 0.54 W with a slope efficiency of 4.8% is achieved, which is the first laser output for Tm:YSAG ceramics.

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“…Thulium (Tm 3+ ) doped solid‐state laser have excited a growing interest for generation of ~2 μm laser radiation, since they can be pumped at ~800 nm, at which wavelength high‐performance laser diodes are commercially available . Tm 3+ ‐doped sesquioxides Re 2 O 3 (Re=Lu, Sc, Y) offer excellent properties as gain media such as high thermal conductivities, low phonon energies, high absorption, and emission cross sections .…”

Section: Introductionmentioning

confidence: 99%

Laser‐quality Tm:(Lu_0.8Sc_0.2)₂O₃ mixed sesquioxide ceramics shaped by gelcasting of well‐dispersed nanopowders

Pan

Hao

et al. 2019

J Am Ceram Soc

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Tm 3+ -doped mixed sesquioxide transparent ceramics are attractive candidates for the generation of robust~2.1 μm lasers. In this paper, laser-quality Tm: (Lu 0.8 Sc 0.2 ) 2 O 3 mixed sesquioxide ceramics were shaped for the first time by gelcasting of well-dispersed nanopowders, which were obtained using a modified coprecipitation method. The dispersibility of starting nanopowders was largely improved using alcohol-water solvent. The rheological properties of slurries were optimized for gelcasting. We also investigated the densification behavior of the gel-casted green compacts. In contrast to the dry-pressing route, it was found that gelcasting could yield more homogeneous and transparent ceramics. The optical in-line transmittance of the ceramic rod 12 mm in length was as high as 80.3% at 2090 nm. Upon pumping the ceramic rod by 796 nm diode laser, a 1.88 W CW laser at 2090 nm was acquired with a slope efficiency of 24.6% (with respect to the input pump power).

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Optical properties and efficient laser oscillation at 2066 nm of novel Tm:Lu_2O_3 ceramics

Cited by 70 publications

References 15 publications

Rare-Earth-Doped Sesquioxides for Diode-Pumped High-Power Lasers in the 1-, 2-, and 3-μm Spectral Range

Rare-Earth-Doped Sesquioxides for Diode-Pumped High-Power Lasers in the 1-, 2-, and 3-μm Spectral Range

Fabrication, microstructure, and optical properties of Tm:Y₃ScAl₄O₁₂ laser ceramics

Laser‐quality Tm:(Lu_0.8Sc_0.2)₂O₃ mixed sesquioxide ceramics shaped by gelcasting of well‐dispersed nanopowders

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Optical properties and efficient laser oscillation at 2066 nm of novel Tm:Lu_2O_3 ceramics

Cited by 70 publications

References 15 publications

Rare-Earth-Doped Sesquioxides for Diode-Pumped High-Power Lasers in the 1-, 2-, and 3-μm Spectral Range

Rare-Earth-Doped Sesquioxides for Diode-Pumped High-Power Lasers in the 1-, 2-, and 3-μm Spectral Range

Fabrication, microstructure, and optical properties of Tm:Y3ScAl4O12 laser ceramics

Laser‐quality Tm:(Lu0.8Sc0.2)2O3 mixed sesquioxide ceramics shaped by gelcasting of well‐dispersed nanopowders

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Product

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Fabrication, microstructure, and optical properties of Tm:Y₃ScAl₄O₁₂ laser ceramics

Laser‐quality Tm:(Lu_0.8Sc_0.2)₂O₃ mixed sesquioxide ceramics shaped by gelcasting of well‐dispersed nanopowders