Improved Amplified Spontaneous Emission of Dye-Doped Functionalized Mesostructured Silica Waveguide Films

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Title: Improved Amplified Spontaneous Emission of Dye-Doped Functionalized Mesostructured Silica Waveguide Films
Authors: Ramirez, Manuel G. | Jahnke, Justin P. | Junk, Matthias J.N. | Villalvilla Soria, José Moisés | Boj Giménez, Pedro | Quintana Arévalo, José Antonio | Calzado Estepa, Eva María | Chmelka, Bradley F. | Díaz-García, María A.
Research Group/s: Física de la Materia Condensada
Center, Department or Service: Universidad de Alicante. Departamento de Física Aplicada | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Amplified spontaneous emission | Mesostructured silica | Organic lasers | Perylenediimide laser dyes | Waveguides
Knowledge Area: Física Aplicada | Física de la Materia Condensada | Óptica
Issue Date: Oct-2015
Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
Citation: Advanced Optical Materials. 2015, 3(10): 1454-1461. doi:10.1002/adom.201500297
Abstract: Amplified spontaneous emission (ASE) in dye-doped mesostructured silica films, deposited directly over fused silica substrates, is demonstrated with low thresholds. Due to functionalization of the silica network with phenyl groups, the refractive index of the active layer is sufficiently increased to impart waveguiding properties that lead to highly efficient ASE. Such functionalization eliminates the need for a separate low-refractive-index layer between the active film and the substrate, as is often used to achieve waveguiding properties with silica mesostructured materials, though which is typically accompanied by significant optical losses that reduce overall ASE performance. By forming a high-quality waveguide without the need for a separate low-refractive-index layer, significantly improved properties are obtained, with ASE thresholds as low as 8 kW cm−2. Solid-state 2D NMR spectroscopy measurements establish the compositions and structures of the active mesostructured film at a molecular level, in particular that phenyl functionalization of the mesochannel surfaces promotes the homogeneous dispersion of the laser dye species over nanoscale dimensions in the materials.
Sponsor: The authors thank support from the Spanish Government through the “Ministerio de Economía y Competitividad” (MINECO) and the European Community (FEDER) through grant nos. MAT2008–06648-C02 and MAT2011–28167-C02. M.G.R. has been supported by a CSIC fellowship within the program JAE. M.A.D.G. acknowledges funding received from the “Ministerio de Educación y Ciencia, MEC” (reference no. PR2009–0456) to perform a research stay at UCSB to initiate the collaboration between the two teams contributing to this work. M.J.N.J. acknowledges financial support from the Alexander von Humboldt-Foundation through a Feodor Lynen Research Fellowship. The NMR experiments were conducted in the Central Facilities of the UCSB Materials Research Laboratory supported by the MRSEC program of the U.S. NSF under award no. DMR-1121053. The work at UCSB was supported by the USARO through the Institute for Collaborative Biotechnologies through W911NF-09-D-0001.
URI: http://hdl.handle.net/10045/53251
ISSN: 2195-1071
DOI: 10.1002/adom.201500297
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Peer Review: si
Publisher version: http://dx.doi.org/10.1002/adom.201500297
Appears in Collections:INV - Física de la Materia Condensada - Artículos de Revistas

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