Publications

FLASH publications

M. Montanari, C. Ciano, L. Persichetti, C. Cedric, L. Baldassarre, M. Ortolani, L. Di Gaspare, G. Capellini, D. Stark, G. Scalari, M. Virgilio, M. De Seta, "THz intersubband absorption in n-type Si1−xGex parabolic quantum wells", Applied Physics Letters 118, 163106 (2021). Available open access at 10.5281/zenodo.4659850

 

D. Stark, M. Mirza, L. Persichetti, M. Montanari, S. Markmann, M. Beck, T. Grange, S. Birner, M. Virgilio, C. Ciano, M. Ortolani, C. Corley, G.i Capellini, L. Di Gaspare, M. De Seta, D. J. Paul, J. Faist, G. Scalari, "THz intersubband electroluminescence from n-type Ge/SiGe quantum cascade structures", Applied Physics Letters 118, 101101 (2021). Available open access at arXiv:2101.05518.

 

C. Ciano, L. Persichetti, M. Montanari, L. Di Gaspare,G. Capellini, L. Baldassarre, M. Ortolani, A. Pashkin, M. Helm, S. Winnerl, M. Virgilio, and M. De Seta, "Electron-phonon coupling in n-type Ge two-dimensional systems", Physical Review B 102, 205302 (2020). Available open access at 10.5281/zenodo.4095550.

 

O. Skibitzki, M.H. Zoellner, F. Rovaris, M.A. Schubert, Y. Yamamoto, L. Persichetti, L. Di Gaspare, M. De Seta, R. Gatti, F. Montalenti, G. Capellini, "Reduction of threading dislocation density beyond the saturation limit by optimized reverse grading", Physical Review Materials, 4, 103403 (2020). Available open access at 10.5281/zenodo.4095543.

 

L. Bagolini, M. Montanari, L. Persichetti, L. Di Gaspare,  G. Capellini, M. Ortolani, M. De Seta and M. Virgilio, "Disentangling elastic and inelastic scattering pathways in the intersubband electron dynamics of n-type Ge/SiGe quantum fountains", Physical Review B 101, 245302 (2020). Available open access at 10.5281/zenodo.382476679.

 

L. Persichetti, M. Montanari, C. Ciano, L. Di Gaspare,  M. Ortolani, L. Baldassarre, M. H. Zoellner, S. Mukherjee,  O. Moutanabbir, G. Capellini, M. Virgilio and M. De Seta, "Intersubband transition engineering in the conduction band of asymmetric coupled Ge/SiGe quantum wells", Crystals 10, 179 (2020). Available open access at https://doi.org/10.3390/cryst10030179.

 

C.L. Manganelli  M. Virgilio  O. Skibitzki  M. Salvalaglio  D. Spirito  P. Zaumseil  Y. Yamamoto  M. Montanari  W.M. Klesse  G. Capellini, "Temperature dependence of strain–phonon coefficient in epitaxial Ge/Si(001): A comprehensive analysis", Journal of Raman Spectroscopy 51, 989-996 (2020). Available open access at https://doi.org/10.1002/jrs.5860

 

T. Grange, S. Mukherjee, G. Capellini, M. Montanari, L. Persichetti, L. Di Gaspare, S. Birner, A. Attiaoui, O. Moutanabbir, M. Virgilio, and M. De Seta, "Atomic-scale insights into semiconductor heterostructures: from experimental three-dimensional analysis of the interface to a generalized theory of interface roughness scattering", Physical Review Applied 13, 044062 (2020). Available open access at https://arxiv.org/abs/2002.00851.

 

K. Gallacher, M. Ortolani, K. Rew, C. Ciano, L. Baldassarre, M. Virgilio, G. Scalari, J. Faist, L. Di Gaspare, M. De Seta, G. Capellini, T. Grange, S. Birner, and D. J. Paul, "Design and simulation of losses in Ge/SiGe terahertz quantum cascade laser waveguides", Optics Express 28, 4786 (2020). Available open access at https://doi.org/10.1364/OE.384993. In-press pre-print available here.

 

C. Ciano, M. Virgilio, L. Bagolini, L. Baldassarre, A. Pashkin, M. Helm, M. Montanari, L. Persichetti, L. Di Gaspare, G. Capellini, D. J. Paul, G. Scalari, J. Faist, M. De Seta, and M. Ortolani, "Terahertz Absorption-Saturation and Emission in Electron-doped Germanium Quantum Wells", Optics Express 28, 7245-7258 (2020). Available open access at https://doi.org/10.1364/OE.381471.

 

A. Forrer, M. Franckié, D. Stark, T. Olariu, M. Beck, J. Faist and G. Scalari, "Photon-Driven Broadband Emission and Frequency Comb RF Injection Locking in THz Quantum Cascade Lasers", ACS Photonics 7, 784 (2020). Available open access at https://arxiv.org/abs/1912.00890.

 

C. Ciano, M. Virgilio, L. Bagolini, L. Baldassarre, A. Pashkin, M. Helm, M. Montanari, L. Persichetti, L. Di Gaspare, G. Capellini, D. J. Paul, G. Scalari, J. Faist, M. De Seta, and M. Ortolani, "Electron Population Dynamics in Optically Pumped Asymmetric Coupled Ge/SiGe Quantum Wells: Experiment and Models",  Photonics 7, 2 (2020). Available open access at https://www.mdpi.com/2304-6732/7/1/2.

 

C. Ciano, L. Di Gaspare, M. Montanari, L. Persichetti, L. Baldassarre, M. Ortolani, G. Capellini, O. Skibitzki, M. Zoellner, J. Faist, G. Scalari, D. Stark, D. J. Paul, K. Rew, O. Moutanabbir, S. Mukherjee, T. Grange, S. Birner, M. Virgilio,  and M. De Seta, "n-type Ge/SiGe Multi Quantum-Wells for a THz Quantum Cascade Laser", ECS Transactions 93, 63 (2019). Pre-print available open access at http://eprints.gla.ac.uk/202769/.

 

M. Montanari, C. Ciano, L. Persichetti, L. Di Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D.J. Paul, T. Grange, S. Birner, M. Scuderi, G. Nicotra, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani, M. De Seta, “High-quality n-type Ge/SiGe multilayers for THz quantum cascade lasers”, IEEE 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) . Preprint available open access at http://eprints.gla.ac.uk/202773/1/202773.pdf.

 

T. Grange, D. Stark, G. Scalari, J. Faist,  L. Persichetti,  L. Di Gaspare,  M. De Seta,  M. Ortolani,  D.J. Paul,  G. Capellini, S. Birner and M. Virgilio, "Room temperature operation of n-type Ge/SiGe terahertz quantum cascade lasers predicted by non-equilibrium Green’s functions", Applied Physics Letters 114, 111102 (2019). Preprint available open access at https://arxiv.org/pdf/1811.12879.pdf.

 

C. Ciano, M. Virgilio, M. Montanari, L. Persichetti, L. Di Gaspare, M. Ortolani, L. Baldassarre, M. H. Zöllner, O. Skibitzki, G.Scalari, J. Faist, D. J. Paul, M. Scuderi, G. Nicotra, T. Grange, S. Birner, G. Capellini, and M. De Seta, “Controlled electron-state coupling in asymmetric Ge/GeSi multi-quantum well”, Physical Review Applied 11, 014003, (2019). Pre-print available open access at 10.5281/zenodo.2319242.

 

M. Montanari, M. Virgilio, C. L. Manganelli, P. Zaumseil, M. H. Zoellner, Y. Hou, M. A. Schubert, L. Persichetti, L. Di Gaspare, M. De Seta, E. Vitiello, E. Bonera, F. Pezzoli, and G. Capellini, “Photoluminescence study of inter-band transitions in few, pseudomorphic and strain-unbalanced Ge/GeSi multiple quantum wells”, Physical Review B 98 195310, (2018). Pre-print available open access at https://arxiv.org/abs/1811.08665.

 

L. Persichetti, M. Fanfoni, M. De Seta, L. Di Gaspare, L. Ottaviano, C. Goletti, and A. Sgarlata, “Formation of extended thermal etch pits on annealed Ge wafers”, Applied Surface Science 462, 86 (2018). Pre-print available open access at https://arxiv.org/abs/1809.03404.

 

Conference presentations

M. De Seta, "SiGe heterostructures for THz QCLs: issues, progress, perspectives", International Quantum Cascade Laser school & workshop IQCLSW (held online), 7th-10th September 2020 (invited).

 

G. Capellini, "On the way towards a n-type Ge/SiGe THz Quantum Cascade Laser", IEEE Photonics Society Summer Topical Meeting Series 2020 (held online), 13rd-15th July 2020 (invited)

 

S. Markmann, "2D-THz-Spectroscopy on a Quantum Cascade Structure", SPb-POEM 2020, 27th-30th April 2020.

 

S. Markmann, "2D-THz-Spectroscopy on a Quantum Cascade Structure", IRMMW-THz 2020 (held online), 8th-13th November 2020.

 

C. Ciano, "Perspectives on electrically pumped Ge/SiGe QW emitters at THz frequencies", International Quantum Cascade Laser school & workshop IQCLSW (held online), 7th-10th September 2020 (poster).

 

C. Ciano, "Perspectives on electrically pumped Ge/SiGe QW emitters at THz frequencies", IRMMW-THz 2020 (held online), 8th-13th November 2020.

 

L. Di Gaspare, M. Montanari, C. Ciano, L. Persichetti, L. Bagolini, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D. J. Paul, T. Grange, S. Birner, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani, and M. De Seta, "High-quality n-type Ge/SiGe heterostructures for room temperature THz emission", EMRS Fall meeting 2019, 16th-19th September 2019 Warsaw, Poland.

 

C. Ciano, M. Montanari, C. Ciano, L. Persichetti, L. Di Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D.J. Paul, T. Grange, S. Birner, M. Scuderi, G. Nicotra, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani and M. De Seta, “Electron-doped SiGe Quantum Well Terahertz Emitters Pumped By FEL Pulses”, IRMMTHz-2019, 1st-6th June, Paris France

 

M. De Seta, M. Montanari, C. Ciano, L. Persichetti, L. Di Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D.J. Paul, T. Grange, S. Birner, M. Scuderi, G. Nicotra, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani, “High-quality N-type Ge/SiGe Multilayers For THz Quantum Cascade Laser”, IRMMTHz-2019, 1st-6th June, Paris France.

 

D. Stark, L. Persichetti, M. Montanari, C. Ciano, L. Di Gaspare, M. De Seta, M. Zoellner, O. Skibitzki, G. Capellini, M. Ortolani, L. Baldassarre, M. Virgilio, T. Grange, S. Birner, K. Rew, D.J. Paul, J. Faist, G. Scalari, “Si-based N-type THz Quantum Cascade Emitter”, IRMMTHz-2019, 1st-6th June, Paris France.

 

Thomas Grange, David Stark, Giacomo Scalari, Jérôme Faist, Luca Persichetti, Monica De Seta, Luciana Di Gaspare, Giovanni Capellini, Douglas Paul, Michele Ortolani, Stefan Birner and Michele Virgilio, "Comparing III-V and group-IV terahertz quantum cascade lasers using non-equilibrium Green’s functions", 2019 ITQW Conference, 15th-20th September, Ojai, USA.

 

M. De Seta, M. Montanari, C. Ciano, L. Persichetti, L. Di Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D. J. Paul, T. Grange, S. Birner, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani, “High-quality n-type Ge/SiGe multilayers for room temperature THz emission” 2019 ITQW Conference, 15th-20th September, Ojai, USA.

 

D. Stark, L. Persichetti, M. Montanari, C. Ciano, L. Di Gaspare, M. De Seta, M. Zoellner, O. Skibitzki, G. Capellini, M. Ortolani, L. Baldassarre, M. Virgilio, T. Grange, S. Birner, K. Rew, D.J. Paul, J. Faist, G. Scalari, “Si-based N-type THz Quantum Cascade Emitter2019 ITQW Conference, 15th-20th September, Ojai, USA.

 

L. Persichetti, M. Montanari, C. Ciano, M. Virgilio, L. Di Gaspare, M. Ortolani, L. Baldassarre, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, K. Rew, D. J. Paul, M. Scuderi, G. Nicotra, S. Mukherjee, O. Moutanabbir, T. Grange, S. Birner, G. Capellini and M. De Seta, "Towards a silicon-based Qunatum Cascade Laser", SPIE Optics-Photonics. 11th –15th August 2019, San Diego, USA.

 

L. Persichetti, M. Montanari, C. Ciano, M. Virgilio, L. Di Gaspare, M. Ortolani, L. Baldassarre, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, K. Rew, D. J. Paul, M. Scuderi, G. Nicotra, S. Mukherjee, O. Moutanabbir, T. Grange, S. Birner, G. Capellini and M. De Seta, "Towards a silicon-based Qunatum Cascade Laser", 2019 EMN Barcelona Meeting on Semiconductor. 19th –23rd August 2019, Barcelona, Spain (invited).

 

D. Stark, L. Persichetti, M. Montanari, C. Ciano, L. Di Gaspare, M. De Seta, M. Zoellner, O. Skibitzki, G. Capellini, M. Ortolani, L. Baldassarre, M. Virgilio, T. Grange, S. Birner, K. Rew, D.J. Paul, J. Faist, G. Scalari, “n-type Ge/SiGe Quantum Cascade Devices for THz Electroluminescence”, Joint Annual Meeting of SPS and ÖPG 2019, 26th-30th August 2019, Zurich, Switzerland.

 

G. Capellini, L. Di Gaspare, M. Montanari, C. Ciano, L. Persichetti, L. Bagolini, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D. J. Paul, T. Grange, S. Birner, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani, and M. De Seta, "On the way towards a n-type Ge/SiGe THz Quantum Cascade Laser", IEEE Photonics Society Summer Topical Meeting Series 2019, 7th-10th July 2019, Fort Lauderdele, USA (invited)

 

Monica De Seta, Chiara Ciano, Luciana Di Gaspare, Michele Montanari, Luca Persichetti, Michele Virgilio, Leonetta Baldassarre Michele Ortolani,, Giovanni Capellini ,Oliver Skibitzki, Marvin Zoellner,, Jerome Faist, Giacomo Scalari, David Stark, Douglas J. Paul, Kirsty Rew, Oussama Moutanabbir, Samik Mukherjee, Thomas Grange, Stefan Birner, "n-type Ge/SiGe Multi Quantum-Wells for a THz Quantum Cascade Laser", 2019 ISTDM Conference, 2nd-6th June 2019 Madison, USA

 

Thomas Grange, David Stark, Giacomo Scalari, Jérôme Faist, Luca Persichetti, Monica De Seta, Luciana Di Gaspare, Giovanni Capellini, Douglas Paul, Michele Ortolani, Stefan Birner and Michele Virgilio, "Comparing III-V and group-IV terahertz quantum cascade lasers using non-equilibrium Green’s functions", CLEO/Europe-EQEC 2019, 23rd-27th June 2019, Munich, Germany.

 

C. Ciano, M. Virgilio, M. Montanari, L. Persichetti, L. Di Gaspare, M. Ortolani, L. Baldassarre, L. Bagolini, M. H. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D. J. Paul, K. Rew, M. Scuderi, G. Nicotra, T. Grange; S. Birner. G. Capellini, Monica De Seta, “Germanium Quantum Wells for Far-infrared Lasers Assembled Using Silicon-based Heterostructures FLASH”, PIERS Conference, 17th-20th June 2019, Rome Italy

 

M. Montanari, L. Persichetti, C. Ciano, M. Virgilio, L. Di Gaspare, M. Ortolani, L. Baldassarre, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, K. Rew, D. J. Paul, M. Scuderi, G. Nicotra, S. Mukherjee, O. Moutanabbir, T. Grange, S. Birner, G. Capellini and M. De Seta “n-type Ge/SiGe Multi Quantum-Wells for a THz Quantum Cascade Laser”, TERAMETANANO Conference Lecce, Italy, May 2019

 

C. Ciano, L. Baldassarre, M. Montanari, L. Persichetti, L. Di Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D. J. Paul, T. Grange, S. Birner, O. Moutanabbir, S. Mukherjee, M. De Seta, M. Ortolani, "Electron-doped SiGe Quantum Well Terahertz Emitters pumped by FEL pulses", FELBE/TELBE User Workshop, 13th-15th May 2019, Dresden Germany (poster)

 

D. Stark, L. Persichetti, M. Montanari, C. Ciano, L. Di Gaspare, M. De Seta, M. Zoellner, O. Skibitzki, G. Capellini, M. Ortolani, L. Baldassarre, M. Virgilio, T. Grange, S. Birner, K. Rew, D.J. Paul, J. Faist, G. Scalari, “n-type Ge/SiGe Quantum Cascade Devices for THz Electroluminescence”, French-German THz Conference 2019, 2nd-5th April 2019, Kaiserslautern Germany.

 

Stefan Birner, David Stark, Giacomo Scalari, Jérôme Faist, Luca Persichetti, Monica De Seta, Luciana Di Gaspare, Giovanni Capellini, Douglas Paul, Michele Ortolani, Thomas Grange and Michele Virgilio, "Temperature-robust terahertz quantum cascade lasers using Ge/SiGe", DPG Spring Meeting 2019, 31st March-5th April 2019, Regensburg, Germany.

 

Thomas Grange, David Stark, Giacomo Scalari, Jérôme Faist, Luca Persichetti, Monica De Seta, Luciana Di Gaspare, Giovanni Capellini, Douglas Paul, Michele Ortolani, Stefan Birner and Michele Virgilio, "Prediction of novel quantum cascade devices using non-equilibrium Green’s functions", 44th Freiburg Infrared Colloquium, 19th-20th March 2019, Freiburg, Germany (poster)

 

M. Montanari, C. Ciano, L. Di Gaspare, L. Persichetti, M. Virgilio, M. Ortolani, L. Baldassarre, G. Capellini, M. Zoellner, O. Skibitzki, M. Helm, G. Scalari, D. Stark, J. Faist,  K.Rew, D.J. Paul, T. Grange, S. Birner, and M. De Seta“Optical properties of a n-doped Ge/SiGe quantum wells in the THz range”, Joint ISTDM / ICSi 2018 Conference Potsdam, Germany, May 2018

 

Stefan Birner, “The nextnano Software for the Simulation of Strained SiGe Heterostructures”, Joint ISTDM / ICSI 2018 Conference, Potsdam, Germany, May 2018

 

Thomas Grange, Giacomo Scalari, Giovanni Capellini, Douglas Paul, Stefan Birner, Monica De Seta, Michele Virgilio, “Temperature-robust terahertz quantum cascade lasers using Ge/SiGe”, 34th International Conference on the Physics of Semiconductors, Montpellier, France, July 2018

 

M. De Seta, M. Montanari, C. Ciano, L. Di Gaspare, L. Persichetti, M. Virgilio, M. Ortolani, L. Baldassarre, G. Capellini, M. Zoellner, O. Skibitzki, M. Helm, G. Scalari, D. Stark, J. Faist, K.Rew, D.J. Paul, T. Grange, S. Birner, “Towards a THz quantum cascade laser based on silicon heterostructures”, E-MRS Fall Meeting Warsaw, Poland, Sept. 2018 (invited).

 

Thomas Grange, Giacomo Scalari, Giovanni Capellini, Douglas J. Paul, Stefan Birner, Monica De Seta, and Michele Virgilio “Modeling electron transport in quantum cascade lasers”, 8th International Quantum Cascade Laser School and Workshop IQCLSW 2018, Cassis, France, 2nd-7th Sept. 2018.

 

Thomas Grange, Giacomo Scalari, Giovanni Capellini, Douglas J. Paul, Stefan Birner, Monica De Seta, and Michele Virgilio, “Temperature-robust terahertz quantum cascade lasers using Ge/SiGe”, ICPS 2018 - 34th International conference on the physics of semiconductors, Montpellier, 29th July - August 3rd 2018.

 

Chiara Ciano, Michele Montanari, Giovanni Capellini, Luciana Di Gaspare, Michele Virgilio, Douglas J. Paul, Giacomo Scalari, Stefan Birner, Thomas Grange, Leonetta Baldassarre, Michele Ortolani, Monica De Seta, "Germanium Quantum Wells in the Conduction Band for Terahertz Emission on Silicon Substrates" 8th International Quantum Cascade Laser School and Workshop IQCLSW 2018, Cassis, France, 2nd-7th Sept. 2018

 

Thomas Grange “Temperature robustness of Ge/SiGe terahertz quantum cascade lasers” 8th International Quantum Cascade Laser School and Workshop IQCLSW 2018, Cassis, France, 2nd-7th Sept. 2018

 

Kirsty Rew, Giacomo Scalari, Giovanni Capellini, Luciana Di Gaspare, Monica De Seta, Stefan Birner, Michele Virgilio, Michele Ortolani, Douglas J. Paul, "Waveguide loss simulations and measurements for Ge/SiGe terahertz quantum cascade lasers" 8th International Quantum Cascade Laser School and Workshop IQCLSW 2018, Cassis, France, 2nd-7th Sept. 2018

 

Carola Burkl, Thomas Grange, Stefan Birner "Algorithm for transferring a working quantum cascade laser design to any other material system" 8th International Quantum Cascade Laser School and Workshop IQCLSW 2018, Cassis, France, 2nd-7th Sept. 2018

 

Stefan Birner “The Nonequilibrium Green’s Function Method for the simulation of Resonant Tunneling Diodes and Quantum Cascade Lasers using the nextnano software”, Fraunhofer Research Institution for Microsystems and Solid State Technologies EMFT, Munich, Germany, 6th Nov. 2018

 

Relevant datasets published in public archives

Please refer to this page for a list.