Quantum electronic properties of the Na/sub 3/Ga/sub 2/Li/sub 3/F/sub 12/:Cr/sup 3+/ laser

Caird, J. A.; Payne, Stephen A.; Staber, P.R.; Ramponi, Albert J.; Chase, L. L.; Krupke, William F.

doi:10.1109/3.231

Cited by 326 publications

(86 citation statements)

References 45 publications

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“…For that purpose, use can be made of the Findlay-Clay or the Caird technique [29,30]. The first one consists of a plot of the threshold pump power P th versus the transmission T of the output coupler and the second one in a plot of the inverse of the slope efficiency η −1 versus the inverse of the transmission T −1 .…”

Section: Cw Laser Resultsmentioning

confidence: 99%

Laser emission of a Nd-doped mixed tellurite and zinc oxide glass

et al. 2014

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The present work reports the luminescence properties and the laser operation of a Nd 3 -doped (TeO 2 -ZnO) bulk tellurite glass. The spectroscopic data are analyzed within the framework of the Judd-Ofelt formalism and the results are used in conjunction with fluorescence lifetime and emission measurements to derive values for the quantum efficiency and the stimulated emission cross section of the considered 4 F 3∕2 → 4 I 11∕2 infrared laser transition around 1062.5 μm. Continuous-wave laser action is achieved for the first time with this bulk tellurite glass by pumping the sample inside a standard two-mirror laser cavity with different output couplers. A low-threshold pump power of 8 mW associated with a laser slope efficiency of 21% could be obtained for an output coupler transmission of 2.7%.

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Section: Cw Laser Resultsmentioning

confidence: 99%

Laser emission of a Nd-doped mixed tellurite and zinc oxide glass

et al. 2014

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“…However this material had an absorption coefficient of ~0.03cm -1 at 1064nm (inferred from Caird analysis of the intracavity losses [39]). This elevated loss limited the performance of the Raman laser.…”

Section: Calorimetric Measurements Of Lossmentioning

confidence: 99%

Characterization of Single-Crystal Synthetic Diamond for Multi-Watt Continuous-Wave Raman Lasers

Savitski

Friel

Hastie

et al. 2012

IEEE J. Quantum Electron.

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This version is available at https://strathprints.strath.ac.uk/37782/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output.JQE-132889-2011.R1

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“…Cavity round-trip losses between 1.8% and 2.1% were derived from the obtained slope efficiencies. 10 Attributing these losses completely to waveguide propagation losses leads to an upper limit of 0.08 dB cm −1 for the waveguide losses. Despite the multimode structure of the waveguide, the observed far-field intensity distribution indicates that the laser output is close to the diffraction limit and that the resonator mode is well matched within the physical dimensions of the planar crystal waveguide.…”

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confidence: 99%

Yb-doped KY(WO4)2 planar waveguide laser

et al. 2006

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High-quality monoclinic KY͑WO 4 ͒ 2 optical waveguides were grown by liquid-phase epitaxy, and laser operation of an Yb-doped KY͑WO 4 ͒ 2 waveguide was demonstrated for the first time to our knowledge. Continuous-wave laser emission near 1 m was achieved with both surface and buried planar waveguides. An output power of 290 mW was obtained in the fundamental mode and the slope efficiency was above 80%. OCIS codes: 140.3070, 140.3380, 140.5680, 230.7390, 310.1860OCIS codes: 140.3070, 140.3380, 140.5680, 230.7390, 310. , 310.2790 Crystals of monoclinic KY͑WO 4 ͒ 2 (KYW) doped with different rare-earth ions are recognized as very promising materials for solid-state lasers operating at room temperature, both in pulsed and continuouswave (cw) mode. 1,2 Due to its high refractive indices, of the order of 2.0, KYW is highly suitable for the fabrication of integrated optical devices. Rare-earth ions incorporated into KYW exhibit very high absorption and emission cross sections. In particular, the Yb 3+ ion in KYW has an absorption maximum near 981 nm with a cross section, for polarization parallel to the N m principal optical axis, ϳ15 times larger than that of YAG:Yb. The short absorption length in highly doped KYW:Yb together with an extremely small laser quantum defect as low as 1.6% (Ref. 3) makes this material a favorable candidate for the thin-disk laser concept, 4 where the active medium is a thin crystal or deposited layer. Recently, cw laser operation normal to a thin layer of KYW doped with 20 at. % Yb (with respect to the Y site) on a KYW substrate was demonstrated and the maximum output power reached 40 mW at 1030 nm. © 2006 Optical Society of America 5In this Letter we report the epitaxial growth of high-quality optical waveguides and, for the first time to our knowledge, on waveguide laser operation based on a double tungstate crystal composite. The waveguide geometry provides potentially high pumppower densities and excellent overlap of pump and resonator modes. This approach requires fabrication of large-area, defect-free thin layers of KYW:Yb on appropriate substrates, having small lattice mismatch and close-to-perfect interfaces between the layer and the substrate to ensure low-loss propagation.Liquid-phase epitaxy (LPE) is a well-known technique for producing high-quality oxide films for laser applications, in which a single-crystal layer can be grown from a molten solution on an oriented singlecrystal substrate.6 During LPE of rare-earth-iondoped KYW layers employing a low-temperature chloride solvent, 7 3D island nucleation generated insertion defects, which limited the maximum layer thickness to approximately 10 m and led to nonoptimum interface quality.The tungstate solvent K 2 W 2 O 7 , which we employed successfully in the present work, can potentially offer larger thickness and good layer quality.5,8 Undoped 1 mm thick KYW crystals grown by a modified Czochralski method with laser-grade polished (010) faces served as substrates. Building on previous work, 5 we employed the vertical dipping tech...

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Quantum electronic properties of the Na/sub 3/Ga/sub 2/Li/sub 3/F/sub 12/:Cr/sup 3+/ laser

Cited by 326 publications

References 45 publications

Laser emission of a Nd-doped mixed tellurite and zinc oxide glass

Laser emission of a Nd-doped mixed tellurite and zinc oxide glass

Characterization of Single-Crystal Synthetic Diamond for Multi-Watt Continuous-Wave Raman Lasers

Yb-doped KY(WO4)2 planar waveguide laser

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