Zobrazeno 1 - 10
of 854
pro vyhledávání: '"Guina Mircea"'
Autor:
Chellu, Abhiroop, Bej, Subhajit, Wahl, Hanna, Kahle, Hermann, Uusitalo, Topi, Hytönen, Roosa, Rekola, Heikki, Lang, Jouko, Schöll, Eva, Hanschke, Lukas, Kallert, Patricia, Kipp, Tobias, Strelow, Christian, Tuominen, Marjukka, Jöns, Klaus D., Karvinen, Petri, Niemi, Tapio, Guina, Mircea, Hakkarainen, Teemu
Generation of single and entangled photons is crucial for photonic quantum information processing. Quantum dots (QDs) are promising sources capable of producing high-quality quantum light states on demand, although at a rate typically limited by thei
Externí odkaz:
http://arxiv.org/abs/2407.11642
Autor:
Hakkarainen, Teemu, Hilska, Joonas, Hietalahti, Arttu, Ranta, Sanna, Peil, Markus, Kantola, Emmi, Chellu, Abhiroop, Sen, Efsane, Penttinen, Jussi-Pekka, Guina, Mircea
Deterministic light sources capable of generating quantum states on-demand at wavelengths compatible with fiber optics and atmospheric transmission are essential for practical applications in quantum communication, photonic quantum computing, and qua
Externí odkaz:
http://arxiv.org/abs/2404.06083
Autor:
Rajala, Patrik, Tatar-Mathes, Philipp, Phung, Hoy-My, Koskinen, Jesse, Ranta, Sanna, Guina, Mircea, Kahle, Hermann
Membrane external-cavity surface-emitting lasers (MECSELs) are at the forefront of pushing the performance limits of vertically emitting semiconductor lasers. Their simple idea of using just a very thin (hundreds of nanometers to few microns) gain me
Externí odkaz:
http://arxiv.org/abs/2309.05409
Autor:
Leguay, Lucie, Chellu, Abhiroop, Hilska, Joonas, Luna, Esperanza, Schliwa, Andrei, Guina, Mircea, Hakkarainen, Teemu
Epitaxially-grown semiconductor quantum dots (QDs) provide an attractive platform for the development of deterministic sources of high-quality quantum states of light. Such non-classical light sources are essential for quantum information processing
Externí odkaz:
http://arxiv.org/abs/2308.15418
Autor:
Michl, Johannes, Peniakov, Giora, Pfenning, Andreas, Hilska, Joonas, Chellu, Abhiroop, Bader, Andreas, Guina, Mircea, Höfling, Sven, Hakkarainen, Teemu, Huber-Loyola, Tobias
Creating single photons in the telecommunication wavelength range from semiconductor quantum dots (QDs) and interfacing them with spins of electrons or holes has been of high interest in recent years, with research mainly focusing on indium based QDs
Externí odkaz:
http://arxiv.org/abs/2305.04384
Autor:
Zia, Nouman, Ojanen, Samu-Pekka, Viheriala, Jukka, Koivusalo, Eero, Hilska, Joonas, Guina, Mircea
Tunable lasers emitting at a 2-3 $\mu$m wavelength range and compatible with photonic integration platforms are of great interest for sensing applications. To this end, combining GaSb-based semiconductor gain chips with Si$_3$N$_4$ photonic integrate
Externí odkaz:
http://arxiv.org/abs/2211.02135
Autor:
Abu Hamed Tareq, Adamovic Nadja, Aeberhard Urs, Alonso-Alvarez Diego, Amin-Akhlaghi Zoe, Auf der Maur Matthias, Beattie Neil, Bednar Nikola, Berland Kristian, Birner Stefan, Califano Marco, Capan Ivana, Cerne Bostjan, Chilibon Irinela, Connolly James. P., Cortes Juan Frederic, Coutinho Jose, David Christin, Deppert Knut, Donchev Vesselin, Drev Marija, Ehlen Boukje, Ekins-Daukes Nicholas, Even Jacky, Fara Laurentiu, Fuertes Marron David, Gagliardi Alessio, Garrido Blas, Gianneta Violetta, Gomes Maria, Guillemoles Jean-Francois, Guina Mircea, Halme Janne, Hocevar Mateja, Jacak Lucjan, Jacak Witold, Jaksic Zoran, Joseph Lejo k., Kassavetis Spyridon, Kazukauskas Vaidotas, Kleider Jean-Paul, Kluczyk Katarzyna, Kopecek Radovan, Krasovec Ursa Opara, Lazzari Jean-Louis, Lifshitz Efrat, Loncaric Martin, Madsen Søren Peder, Vega Antonio Marti, Mencaraglia Denis, Messing Maria E., Armando Felipe Murphy, Nassiopoulou Androula G., Neijm Ahmed, Nemcsics Akos, Neto Victor, Pedesseau Laurent, Persson Clas, Petridis Konstantinos, Popescu Lacramioara, Pucker Georg, Radovanović Jelena, Rimada Julio C., Ristova Mimoza, Savic Ivana, Savin Hele, Sendova-Vassileva Marushka, Sengul Abdurrahman, Silva José, Steiner Ullrich, Storch Jan, Stratakis Emmanuel, Tao Shuxia, Tomanek Pavel, Tomić Stanko, Tukiainen Antti, Turan Rasit, Ulloa Jose Maria, Wang Shengda, Yuksel Fatma, Zadny Jaroslav, Zarbakhsh Javad
Publikováno v:
EPJ Photovoltaics, Vol 9, p 10 (2018)
Photovoltaics is amongst the most important technologies for renewable energy sources, and plays a key role in the development of a society with a smaller environmental footprint. Key parameters for solar cells are their energy conversion efficiency,
Externí odkaz:
https://doaj.org/article/70007cd422c948ea86bbfd06944df61e
Autor:
Hakkarainen Teemu, Schramm Andreas, Tukiainen Antti, Ahorinta Risto, Toikkanen Lauri, Guina Mircea
Publikováno v:
Nanoscale Research Letters, Vol 5, Iss 12, Pp 1892-1896 (2010)
Abstract We report the use of partially relaxed tensile as well as compressively strained GaInP layers for lateral ordering of InAs quantum dots with the aid of misfit dislocation networks. The strained layers and the InAs QDs were characterized by m
Externí odkaz:
https://doaj.org/article/e70a07b065574b9893ce0ea4587f056c
Autor:
Aho Arto, Isoaho Riku, Tukiainen Antti, Polojärvi Ville, Raappana Marianna, Aho Timo, Guina Mircea
Publikováno v:
E3S Web of Conferences, Vol 16, p 03008 (2017)
Dilute nitride arsenide antimonide compounds offer widely tailorable band-gaps, ranging from 0.8 eV to 1.4 eV, for the development of lattice-matched multijunction solar cells with three or more junctions. Here we report on the performance of GaInP/G
Externí odkaz:
https://doaj.org/article/0721e5f6b5854f4baa6feddf86051546
Autor:
Campesato Roberta, Tukiainen Antti, Aho Arto, Gori Gabriele, Isoaho Riku, Greco Erminio, Guina Mircea
Publikováno v:
E3S Web of Conferences, Vol 16, p 03003 (2017)
We report a triple junction InGaP/GaAs/InGaNAs solar cell with efficiency of ~31% at AM0, 25 °C fabricated using a combined molecular beam epitaxy (MBE) and metal-organic chemical vapour deposition (MOCVD) processes. The prototype cells comprise of
Externí odkaz:
https://doaj.org/article/4d4a8431da834e8d8727349de943bd41