Andrea Ballabio
Andrea Ballabio
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Graded SiGe waveguides with broadband low-loss propagation in the mid infrared
JM Ramirez, Q Liu, V Vakarin, J Frigerio, A Ballabio, X Le Roux, ...
Optics express 26 (2), 870-877, 2018
732018
Tunability of the dielectric function of heavily doped germanium thin films for mid-infrared plasmonics
J Frigerio, A Ballabio, G Isella, E Sakat, G Pellegrini, P Biagioni, M Bollani, ...
Physical Review B 94 (8), 085202, 2016
702016
Low-loss Ge-rich Si0.2Ge0.8 waveguides for mid-infrared photonics
JM Ramirez, V Vakarin, C Gilles, J Frigerio, A Ballabio, P Chaisakul, ...
Optics letters 42 (1), 105-108, 2017
592017
Germanium-based integrated photonics from near-to mid-infrared applications
D Marris-Morini, V Vakarin, JM Ramirez, Q Liu, A Ballabio, J Frigerio, ...
Nanophotonics 7 (11), 1781-1793, 2018
502018
Ge-rich graded-index Si1-xGex waveguides with broadband tight mode confinement and flat anomalous dispersion for nonlinear mid-infrared photonics
JM Ramirez, V Vakarin, J Frigerio, P Chaisakul, D Chrastina, X Le Roux, ...
Optics Express 25 (6), 6561-6567, 2017
482017
Ultra-wideband Ge-rich silicon germanium integrated Mach–Zehnder interferometer for mid-infrared spectroscopy
V Vakarin, JM Ramírez, J Frigerio, A Ballabio, X Le Roux, Q Liu, ...
Optics letters 42 (17), 3482-3485, 2017
402017
Analysis of Ge micro-cavities with in-plane tensile strains above 2%
RW Millar, K Gallacher, J Frigerio, A Ballabio, A Bashir, I MacLaren, ...
Optics express 24 (5), 4365-4374, 2016
362016
Mid-infrared sensing between 5.2 and 6.6 µm wavelengths using Ge-rich SiGe waveguides
Q Liu, JM Ramirez, V Vakarin, X Le Roux, A Ballabio, J Frigerio, ...
Optical Materials Express 8 (5), 1305-1312, 2018
312018
Nonlinear Properties of Ge-rich Si 1− x Ge x Materials with Different Ge Concentrations
S Serna, V Vakarin, JM Ramirez, J Frigerio, A Ballabio, X Le Roux, ...
Scientific reports 7 (1), 1-11, 2017
242017
Optical properties of highly n-doped germanium obtained by in situ doping and laser annealing
J Frigerio, A Ballabio, K Gallacher, V Giliberti, L Baldassarre, R Millar, ...
Journal of Physics D: Applied Physics 50 (46), 465103, 2017
222017
Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates
K Gallacher, A Ballabio, RW Millar, J Frigerio, A Bashir, I MacLaren, ...
Applied Physics Letters 108 (9), 091114, 2016
202016
Integrated broadband dual-polarization Ge-rich SiGe mid-infrared Fourier-transform spectrometer
Q Liu, JM Ramirez, V Vakarin, X Le Roux, C Alonso-Ramos, J Frigerio, ...
Optics letters 43 (20), 5021-5024, 2018
192018
Sharp bends and Mach-Zehnder interferometer based on Ge-rich-SiGe waveguides on SiGe graded buffer
V Vakarin, P Chaisakul, J Frigerio, A Ballabio, X Le Roux, JR Coudevylle, ...
Optics express 23 (24), 30821-30826, 2015
172015
Broadband integrated racetrack ring resonators for long-wave infrared photonics
JM Ramirez, Q Liu, V Vakarin, X Le Roux, J Frigerio, A Ballabio, ...
Optics letters 44 (2), 407-410, 2019
162019
On-chip Bragg grating waveguides and Fabry-Perot resonators for long-wave infrared operation up to 8.4 µm
Q Liu, JM Ramirez, V Vakarin, X Le Roux, J Frigerio, A Ballabio, ...
Optics express 26 (26), 34366-34372, 2018
142018
Characterization and effect of thermal annealing on InAs quantum dots grown by droplet epitaxy on GaAs (111) a substrates
S Bietti, L Esposito, A Fedorov, A Ballabio, A Martinelli, S Sanguinetti
Nanoscale research letters 10 (1), 1-7, 2015
132015
On-chip Fourier-transform spectrometer based on spatial heterodyning tuned by thermo-optic effect
M Montesinos-Ballester, Q Liu, V Vakarin, JM Ramirez, C Alonso-Ramos, ...
Scientific reports 9 (1), 1-10, 2019
122019
Voltage-tunable dual-band Ge/Si photodetector operating in VIS and NIR spectral range
ET Simola, A De Iacovo, J Frigerio, A Ballabio, A Fabbri, G Isella, ...
Optics express 27 (6), 8529-8539, 2019
112019
Reduced-pressure chemical vapor deposition growth of isolated Ge crystals and suspended layers on micrometric Si pillars
O Skibitzki, G Capellini, Y Yamamoto, P Zaumseil, MA Schubert, ...
ACS applied materials & interfaces 8 (39), 26374-26380, 2016
112016
GaAs epilayers grown on patterned (001) silicon substrates via suspended Ge layers
A Ballabio, S Bietti, A Scaccabarozzi, L Esposito, S Vichi, A Fedorov, ...
Scientific reports 9 (1), 1-8, 2019
82019
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