Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Sreeramulu Valligatla a"'
Symmetry‐Induced Selective Excitation of Topological States in Su–Schrieffer–Heeger Waveguide Arrays
Autor:
Min Tang, Jiawei Wang, Sreeramulu Valligatla, Christian N. Saggau, Haiyun Dong, Ehsan Saei Ghareh Naz, Sebastian Klembt, Ching Hua Lee, Ronny Thomale, Jeroen van den Brink, Ion Cosma Fulga, Oliver G. Schmidt, Libo Ma
Publikováno v:
Advanced Photonics Research, Vol 4, Iss 11, Pp n/a-n/a (2023)
The investigation of topological state transition in carefully designed photonic lattices is of high interest for fundamental research, as well as for applied studies such as manipulating light flow in on‐chip photonic systems. Herein, the topologi
Externí odkaz:
https://doaj.org/article/7fe35d816dc443adb473d219fac4ba29
Autor:
Shaista Andleeb, Xiaoyu Wang, Haiyun Dong, Sreeramulu Valligatla, Christian Niclaas Saggau, Libo Ma, Oliver G. Schmidt, Feng Zhu
Publikováno v:
Nanomaterials, Vol 13, Iss 9, p 1491 (2023)
Over the past years, molybdenum disulfide (MoS2) has been the most extensively studied two-dimensional (2D) semiconductormaterial. With unique electrical and optical properties, 2DMoS2 is considered to be a promising candidate for future nanoscale el
Externí odkaz:
https://doaj.org/article/40805af20c5c414598e4e2e7191b3a56
Autor:
Jiawei Wang, Sreeramulu Valligatla, Yin Yin, Lukas Schwarz, Mariana Medina-Sánchez, Stefan Baunack, Ching Hua Lee, Ronny Thomale, Shilong Li, Vladimir M. Fomin, Libo Ma, Oliver G. Schmidt
Publikováno v:
Nature Photonics. 17:120-125
The Möbius strip, a fascinating loop structure with one-sided topology, provides a rich playground for manipulating the non-trivial topological behaviour of spinning particles, such as electrons, polaritons and photons, in both real and parameter sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14d8daa495ba05e62b6e4a092950c43a
https://doi.org/10.1038/s41566-022-01107-7
https://doi.org/10.1038/s41566-022-01107-7
Autor:
Mahalaxmi Samal, Rojalin Sahu, D. Narayana Rao, M. Veeramohan Rao, Nabil A. Saad, Bishnu P. Biswal, Sreeramulu Valligatla
Publikováno v:
Chemical Communications. 55:11025-11028
Porphyrin-based porous organic frameworks are an important group of materials gaining interest due to their structural diversity and distinct opto-electronic properties. However, these materials are seldom explored for nonlinear optical (NLO) applica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7546d4e1b3b5a70a66b275f36aef95c4
https://doi.org/10.1039/c9cc05415d
https://doi.org/10.1039/c9cc05415d
Autor:
Christian N. Saggau, Sreeramulu Valligatla, Xiaoyu Wang, Haiyun Dong, Libo Ma, Oliver G. Schmidt
Publikováno v:
Laser & Photonics Reviews. 16:2200085
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d43f34a579ad352a222d03c96ea58e59
https://doi.org/10.1002/lpor.202200085
https://doi.org/10.1002/lpor.202200085
Autor:
Yin Yin, Jiawei Wang, Oliver G. Schmidt, Yue-De Yang, Sreeramulu Valligatla, Christian Niclaas Saggau, Qi Hao, Libo Ma, Ehsan Saei Ghareh Naz, Yuan Li
Publikováno v:
Nano Letters. 18:7261-7267
We report the mode interactions and resonant hybridization in nanomembrane-formed concentric dual ring cavities supporting whispering gallery mode resonances. Utilizing a rolled-up nanomembrane with subwavelength thickness as an interlayer, dual conc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5211b3072bb22a060393b321757c1d88
https://doi.org/10.1021/acs.nanolett.8b03453
https://doi.org/10.1021/acs.nanolett.8b03453
Autor:
Maurizio Ferrari, Subhabrata Ghosh, Anna Lukowiak, Alessandro Chiasera, B N Shivakiran Bhaktha, Sreeramulu Valligatla
Publikováno v:
Ceramics international 43 (2017): 1145–1149. doi:10.1016/j.ceramint.2016.10.055
info:cnr-pdr/source/autori:Subhabrata Ghosh, Sreeramulu Valligatla, Anna Lukowiak, Alessandro Chiasera, Maurizio Ferrari, B.N. Shivakiran Bhaktha/titolo:Time-resolved photoluminescence studies in Eu-doped SiO2-HfO2-ZnO glass-ceramic waveguides/doi:10.1016%2Fj.ceramint.2016.10.055/rivista:Ceramics international/anno:2017/pagina_da:1145/pagina_a:1149/intervallo_pagine:1145–1149/volume:43
info:cnr-pdr/source/autori:Subhabrata Ghosh, Sreeramulu Valligatla, Anna Lukowiak, Alessandro Chiasera, Maurizio Ferrari, B.N. Shivakiran Bhaktha/titolo:Time-resolved photoluminescence studies in Eu-doped SiO2-HfO2-ZnO glass-ceramic waveguides/doi:10.1016%2Fj.ceramint.2016.10.055/rivista:Ceramics international/anno:2017/pagina_da:1145/pagina_a:1149/intervallo_pagine:1145–1149/volume:43
Fabrication of ZnO-HfO2 hybrid nanocrystals embedded 70 SiO2-(30−x) HfO2-xZnO (x=0, 2, 5, 7 and 10 mol%) ternary glass-ceramic planar waveguides doped with 1 mol% Eu-ions, by sol-gel process and dip-coating technique has been reported. The effect o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe17eb5f970bb9745dfa76b6038657f9
https://doi.org/10.1016/j.ceramint.2016.10.055
https://doi.org/10.1016/j.ceramint.2016.10.055
Autor:
Irena Senkovska, Daniel Becker, Matthew Addicoat, D. Narayana Rao, Bala Murali Krishna Mariserla, Reinhard Berger, Stefan Kaskel, Naisa Chandrasekhar, Mingchao Wang, Sreeramulu Valligatla, Tanmay Banerjee, Xinliang Feng, Nabil A. Saad, Bishnu P. Biswal
Covalent organic frameworks (COFs) have aroused immense scientific interest as an exhilarating class of porous materials due to their structure tunability and diverse properties. However, understanding of their response towards laser induced nonlinea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48debcdd2ae7c2c57c27a2ed50cbd16c
https://irep.ntu.ac.uk/id/eprint/36065/1/13576_Addicoat.pdf
https://irep.ntu.ac.uk/id/eprint/36065/1/13576_Addicoat.pdf
Autor:
Gianluca Galzerano, Anna Lukowiak, Francesco Scotognella, Mariano Ferrari, Sreeramulu Valligatla, L. Zur, Stefano Taccheo, Cesare Meroni, Davor Ristić, Alessandro Chiasera, Giorgio Speranza, Yann G. Boucher, G. C. Righini, Roberta Ramponi, Mile Ivanda, Stefano Varas
Publikováno v:
Optical Materials
Optical Materials, Elsevier, 2019, 87, pp.107-111. ⟨10.1016/j.optmat.2018.04.057⟩
Optical materials (Amst., Print) 87 (2019): 107–111. doi:10.1016/j.optmat.2018.04.057
info:cnr-pdr/source/autori:A. Chiasera, C. Meroni, F. Scotognella, Y.G. Boucher, G. Galzerano, A. Lukowiak,D. Ristic, G. Speranza, S. Valligatla, S. Varas, L. Zur, M. Ivanda, G.C. Righinil,S. Taccheo, R. Ramponi, M. Ferrari/titolo:Coherent emission from fully Er3+ doped monolithic 1-D dielectric microcavity fabricated by rf-sputtering/doi:10.1016%2Fj.optmat.2018.04.057/rivista:Optical materials (Amst., Print)/anno:2019/pagina_da:107/pagina_a:111/intervallo_pagine:107–111/volume:87
Optical Materials, 2019, 87, pp.107-111. ⟨10.1016/j.optmat.2018.04.057⟩
Optical Materials, Elsevier, 2019, 87, pp.107-111. ⟨10.1016/j.optmat.2018.04.057⟩
Optical materials (Amst., Print) 87 (2019): 107–111. doi:10.1016/j.optmat.2018.04.057
info:cnr-pdr/source/autori:A. Chiasera, C. Meroni, F. Scotognella, Y.G. Boucher, G. Galzerano, A. Lukowiak,D. Ristic, G. Speranza, S. Valligatla, S. Varas, L. Zur, M. Ivanda, G.C. Righinil,S. Taccheo, R. Ramponi, M. Ferrari/titolo:Coherent emission from fully Er3+ doped monolithic 1-D dielectric microcavity fabricated by rf-sputtering/doi:10.1016%2Fj.optmat.2018.04.057/rivista:Optical materials (Amst., Print)/anno:2019/pagina_da:107/pagina_a:111/intervallo_pagine:107–111/volume:87
Optical Materials, 2019, 87, pp.107-111. ⟨10.1016/j.optmat.2018.04.057⟩
International audience; All Er3+ doped dielectric 1-D microcavity was fabricated by rf sputtering technique. The microcavity was constituted by half wave Er3+ doped SiO2 active layer inserted between two Bragg reflectors consists of ten pairs of SiO2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f509ee1146f4609af571fce738808d0
https://hal.archives-ouvertes.fr/hal-01950094
https://hal.archives-ouvertes.fr/hal-01950094
Autor:
Alessandro Chiasera a, Francesco Scotognella b, c, Sreeramulu Valligatla a, d, e, Stefano Varas a, Jacek Jasieniak f, Luigino Criante c, Anna Lukowiak g, Davor Ristic h, i, Rogeria Rocha Gonçalves j, Stefano Taccheo k, Mile Ivanda h, Giancarlo C. Righini l, m, Roberta Ramponi n, Alessandro Martucci o, Maurizio Ferrari
Publikováno v:
Optical materials (Amst., Print) 61 (2016): 11–14. doi:10.1016/j.optmat.2016.04.014
info:cnr-pdr/source/autori:Alessandro Chiasera a, Francesco Scotognella b, c, Sreeramulu Valligatla a, d, e, Stefano Varas a, Jacek Jasieniak f, Luigino Criante c, Anna Lukowiak g, Davor Ristic h, i, Rogeria Rocha Gonçalves j, Stefano Taccheo k, Mile Ivanda h, i, Giancarlo C. Righini l, m, Roberta Ramponi n, Alessandro Martucci o, Maurizio Ferrari/titolo:Glass-based 1-D dielectric microcavities/doi:10.1016%2Fj.optmat.2016.04.014/rivista:Optical materials (Amst., Print)/anno:2016/pagina_da:11/pagina_a:14/intervallo_pagine:11–14/volume:61
info:cnr-pdr/source/autori:Alessandro Chiasera a, Francesco Scotognella b, c, Sreeramulu Valligatla a, d, e, Stefano Varas a, Jacek Jasieniak f, Luigino Criante c, Anna Lukowiak g, Davor Ristic h, i, Rogeria Rocha Gonçalves j, Stefano Taccheo k, Mile Ivanda h, i, Giancarlo C. Righini l, m, Roberta Ramponi n, Alessandro Martucci o, Maurizio Ferrari/titolo:Glass-based 1-D dielectric microcavities/doi:10.1016%2Fj.optmat.2016.04.014/rivista:Optical materials (Amst., Print)/anno:2016/pagina_da:11/pagina_a:14/intervallo_pagine:11–14/volume:61
We have developed a reliable RF sputtering techniques allowing to fabricate glass-based one dimensional microcavities, with high quality factor. This property is strongly related to the modification of the density of states due to the confinement of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5300ae7951037a5d8eac99a59ae4a010
https://doi.org/10.1016/j.optmat.2016.04.014
https://doi.org/10.1016/j.optmat.2016.04.014