Here we present the assembly of novel transparent all-polymer distributed feedback(DFB)lasers.Flexible and highly transparent cellulose diacetate(CdA)was employed as substrate on which gratings with different periods ...Here we present the assembly of novel transparent all-polymer distributed feedback(DFB)lasers.Flexible and highly transparent cellulose diacetate(CdA)was employed as substrate on which gratings with different periods were engraved by thermal nanoimprinting with high fidelity.Highly luminescent conjugated polymers(CP),poly(9,9-dioctylfluorene)(PFO),poly(9,9-dioctylfluorene-alt-benzothiadiazole)(F8BT),and a blend of F8BT and poly(3-hexylthiophene)-poly(9,9-dioctylfluorene-altbenzothiadiazole)(P3HT:F8BT)were deposited by spin coating onto the nanostructured plastic surfaces,giving rise to perpendicular single-mode lasing emission in the blue,green,and red wavelength ranges,respectively.These lasers show linewidths below 1 nm and low thresholds(≈6μJcm^(−2) for blue and red lasing emission),comparable to other state-of-the-art lasers obtained from similar optical gain materials on rigid substrates.The followed strategy is scalable and versatile,enabling the development of large area nanoimprinted DFB lasers(>1cm^(2))on plastic,which is highly relevant for applications in various markets.展开更多
基金J.C-G.is grateful to the Spanish Ministerio de Economía,Industria y Competitividad through MAT2014-57652-C2-1-R(LAPSEN),RTI2018-097508-B-I00(AMAPOLA)PCIN-2015-169-C02-01(MOFSENS)projects+6 种基金R.W.gratefully acknowledges support by the European Union structural funds and the Comunidad de Madrid NMAT2D-CM project(S2018/NMT-4511)as well as by the Spanish Ministerio de Economía,Industria y Competitividad through project No.MAT2015-71879-PIMDEA Nanociencia acknowledges support from the“Severo Ochoa”Programme for Centers of Excellence in R&D(MINECO,Grant SEV-2016-0686)R.X.thanks for financial support from the National Natural Science Foundation of China(Grants 61874058 and 61376023)the National Key Basic Research Program of China(973 Program,2015CB932203)the Priority Academic Program Development Fund of Jiangsu Higher Education Institutions in ChinaThis work is partially supported by the Spanish Ministry of Economy,Industry and Competitiveness through Grant SUPERMNAN ESP2015-65597-C4-3-R DETECTA ESP2017-86582-C4-3-R.D.G.acknowledges Grant RYC-2012-09864.The authors are grateful to D.Hermida for excellent technical support during the synchrotron experiments at the BM26 beamline.
文摘Here we present the assembly of novel transparent all-polymer distributed feedback(DFB)lasers.Flexible and highly transparent cellulose diacetate(CdA)was employed as substrate on which gratings with different periods were engraved by thermal nanoimprinting with high fidelity.Highly luminescent conjugated polymers(CP),poly(9,9-dioctylfluorene)(PFO),poly(9,9-dioctylfluorene-alt-benzothiadiazole)(F8BT),and a blend of F8BT and poly(3-hexylthiophene)-poly(9,9-dioctylfluorene-altbenzothiadiazole)(P3HT:F8BT)were deposited by spin coating onto the nanostructured plastic surfaces,giving rise to perpendicular single-mode lasing emission in the blue,green,and red wavelength ranges,respectively.These lasers show linewidths below 1 nm and low thresholds(≈6μJcm^(−2) for blue and red lasing emission),comparable to other state-of-the-art lasers obtained from similar optical gain materials on rigid substrates.The followed strategy is scalable and versatile,enabling the development of large area nanoimprinted DFB lasers(>1cm^(2))on plastic,which is highly relevant for applications in various markets.
