{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T13:07:59Z","timestamp":1761311279729,"version":"build-2065373602"},"reference-count":21,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2017,9,2]],"date-time":"2017-09-02T00:00:00Z","timestamp":1504310400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["UID\/QUI00100\/2013"],"award-info":[{"award-number":["UID\/QUI00100\/2013"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>A ytterbium doped active material for thin-disk laser was developed based on aluminosilicate and phosphosilicate glass matrices containing up to 30 mol% YbO1.5. Thick films and bulk samples were prepared by sol-gel processing. The structural nature of the base material was assessed by X-ray diffraction and Raman spectroscopy and the film morphology was evidenced by scanning electron microscopy. The photoluminescence (PL) properties of different compositions, including emission spectra and lifetimes, were also studied. Er3+ was used as an internal reference to compare the intensities of the Yb3+ PL peaks at ~ 1020 nm. The Yb3+ PL lifetimes were found to vary between 1.0 and 0.5 ms when the Yb concentration increased from 3 to 30 mol%. Based on a figure of merit, the best active material selected was the aluminosilicate glass composition 71 SiO2-14 AlO1.5-15 YbO1.5 (in mol%). An active disk, ~ 36 \u03bcm thick, consisting of a Bragg mirror, an aluminosilicate layer doped with 15 mol% Yb and an anti-reflective coating, was fabricated.<\/jats:p>","DOI":"10.3390\/ma10091020","type":"journal-article","created":{"date-parts":[[2017,9,4]],"date-time":"2017-09-04T11:11:52Z","timestamp":1504523512000},"page":"1020","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Sol-Gel Derived Active Material for Yb Thin-Disk Lasers"],"prefix":"10.3390","volume":"10","author":[{"given":"Rui","family":"Almeida","sequence":"first","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural\/DEQ, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"given":"Tiago","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural\/DEQ, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0986-9880","authenticated-orcid":false,"given":"Lu\u00eds","family":"Santos","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural\/DEQ, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2017,9,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1007\/978-3-319-17659-8_5","article-title":"Ultrafast Thin-Disk Lasers","volume":"Volume 195","author":"Nolte","year":"2016","journal-title":"Ultrashort Pulse Laser Technology\u2014Laser Sources and Applications"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"598","DOI":"10.1109\/JSTQE.2007.897180","article-title":"Fifteen Years of Work on Thin-Disk Lasers: Results and Scaling Laws","volume":"13","author":"Giesen","year":"2007","journal-title":"IEEE J. Sel. Top. Quantum Electron."},{"key":"ref_3","unstructured":"TRUMPF (2017, July 05). Disk Lasers. Available online: http:\/\/www.trumpf-laser.com\/en\/products\/solid-state-lasers\/disk-lasers.html."},{"key":"ref_4","unstructured":"BOEING (2017, July 05). Boeing Thin Disk Laser Exceeds Performance Requirements During Testing. Available online: http:\/\/boeing.mediaroom.com\/Boeing-Thin-Disk-Laser-Exceeds-Performance-Requirements-During-Testing."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"365","DOI":"10.1007\/BF01081875","article-title":"Scalable concept for diode-pumped high-power solid-state lasers","volume":"58","author":"Giesen","year":"1994","journal-title":"Appl. Phys. B"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"4605","DOI":"10.1364\/OE.23.004605","article-title":"A multi-pass pumping scheme for thin disk lasers with good anti-disturbance ability","volume":"23","author":"Huang","year":"2015","journal-title":"Opt. Express"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"16966","DOI":"10.1364\/OE.15.016966","article-title":"Efficient femtosecond high power Yb:Lu2O3 thin disk laser","volume":"15","author":"Marchese","year":"2007","journal-title":"Opt. Express"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"7075","DOI":"10.1364\/OE.15.007075","article-title":"Broadly tunable high-power Yb:Lu2O3 thin disk laser with 80% slope efficiency","volume":"15","author":"Peters","year":"2007","journal-title":"Opt. Express"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"417","DOI":"10.1016\/S0925-3467(99)00095-6","article-title":"Spectroscopy of Er and Er-Yb-doped phosphate glasses","volume":"13","author":"Francini","year":"2000","journal-title":"Opt. Mater."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"307","DOI":"10.1007\/s10854-008-9596-2","article-title":"Rare earth-doped photonic crystals via sol-gel","volume":"20","author":"Marques","year":"2009","journal-title":"J. Mater. Sci. Mater. Electron."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"809","DOI":"10.1007\/s00340-009-3885-1","article-title":"Simultaneous broadening and enhancement of the 1.5 micron photoluminescence peak of Er3+ ions embedded in a 1-D photonic crystal microcavity","volume":"98","author":"Li","year":"2010","journal-title":"Appl. Phys. B"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1007\/s10971-011-2632-3","article-title":"Elimination of porosity in heavily rare-earth doped sol\u2013gel derived silicate glass films","volume":"61","author":"Li","year":"2012","journal-title":"J. Sol-Gel Sci. Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"436","DOI":"10.1007\/s10971-017-4420-1","article-title":"Sol-gel derived Yb:YAG polycrystalline ceramics for laser applications","volume":"83","author":"Ferreira","year":"2017","journal-title":"J. Sol-Gel Sci. Technol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1007\/s10971-016-4071-7","article-title":"Heavily Yb-doped silicate glass thick films","volume":"81","author":"Ribeiro","year":"2017","journal-title":"J. Sol-Gel Sci. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Perumal, R.N., and Subalakshmi, G. (2017). Near-infrared down-conversion in Yb3+:TiO2 for solar cell applications. J. Mater. Sci. Mater. Electron.","DOI":"10.1007\/s10854-016-5734-4"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1016\/S0030-4018(96)00720-1","article-title":"Lifetime quenching in Yb-doped fibers","volume":"136","author":"Paschotta","year":"1997","journal-title":"Opt. Commun."},{"key":"ref_17","first-page":"29","article-title":"Cooperative emission in Yb3+: YAG planar epitaxial waveguides","volume":"94\u201395","author":"Malinoski","year":"2011","journal-title":"J. Lumin."},{"key":"ref_18","unstructured":"(2017, July 05). RP Photonics Encyclopedia. Available online: http:\/\/www.rp-photonics.com\/ytterbium_doped_gain_media.html."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"394","DOI":"10.1209\/epl\/i2005-10092-4","article-title":"Self-absorption and Radiation trapping in Er3+-doped TeO2-based glasses","volume":"71","author":"Matarrelli","year":"2005","journal-title":"Europhys. Lett."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"7709","DOI":"10.1364\/OE.16.007709","article-title":"Excitation diffusion in GeGaSe and GeGaS glasses heavily doped with Er3+","volume":"16","author":"Kouhia","year":"2008","journal-title":"Opt. Express"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1107\/S0021889878012844","article-title":"Scherrer after Sixty Years: A Survey and Some New Results in the Determination of Crystallite Size","volume":"11","author":"Langford","year":"1978","journal-title":"J. Appl. Crystallogr."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/10\/9\/1020\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T18:43:57Z","timestamp":1760208237000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/10\/9\/1020"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,9,2]]},"references-count":21,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2017,9]]}},"alternative-id":["ma10091020"],"URL":"https:\/\/doi.org\/10.3390\/ma10091020","relation":{},"ISSN":["1996-1944"],"issn-type":[{"type":"electronic","value":"1996-1944"}],"subject":[],"published":{"date-parts":[[2017,9,2]]}}}