Multi-physics simulations of vertical-cavity surface-emitting lasers (VCSELs)

• Collegio di Ingegneria Elettronica, delle Telecomunicazioni e Fisica. Componente invitato

Bachelor of Science

• Electronic Circuits. A.A. 2024/25, ELECTRONIC AND COMMUNICATIONS ENGINEERING (INGEGNERIA ELETTRONICA E DELLE COMUNICAZIONI). Collaboratore del corso
• Dispositivi elettronici. A.A. 2024/25, INGEGNERIA FISICA. Collaboratore del corso

• Torrelli, Valerio; Miri, Lorenzo; D'Alessandro, Martino; Gullino, Alberto; Zimmer, ... (2025)
  Elliptical polarization in VCSELs via joint interaction of a tilted sub-wavelength grating and intrinsic semiconductor anisotropies. In: OPTICS LETTERS, vol. 50, pp. 3082-3085. ISSN 0146-9592
  Contributo su Rivista
• Gullino, Alberto; D'Alessandro, Martino; Torrelli, Valerio; Tibaldi, Alberto; Bertazzi, ... (2025)
  VCSEL Thermal Sources: A Physics-Based Simulation Approach. In: 2025 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Lodz (Pol), 14-18 settembre 2025, pp. 129-130. ISBN: 979-8-3315-2153-0
  Contributo in Atti di Convegno (Proceeding)
• D'Alessandro, Martino; Torrelli, Valerio; Debernardi, Pierluigi; Gullino, Alberto; ... (2025)
  Modelling Coherent Emission in Transverse Coupled Cavity VCSELs. In: 2025 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Lodz (Pol), 14-18 settembre 2025, pp. 125-126. ISBN: 979-8-3315-2153-0
  Contributo in Atti di Convegno (Proceeding)
• Torrelli, Valerio (2025)
  Vertical-cavity surface-emitting lasers: computer-aided modal and polarization engineering. relatore: BERTAZZI, FRANCESCO; DEBERNARDI, PIERLUIGI; , 37. XXXVII Ciclo, P.: 201
  Doctoral Thesis
• Torrelli, V.; Alasio, Matteo; D'Alessandro, Martino.; Gullino, Alberto.; Miri, L.; ... (2025)
  Modeling Self-Heating in High-Power Single-Mode Phase-Coupled Linear VCSEL Arrays. In: IEEE PHOTONICS JOURNAL, vol. 17, pp. 1-7. ISSN 1943-0655
  Contributo su Rivista
• Alasio, Matteo; Torrelli, V.; Albano, Simone.; Miri, L.; Gullino, Alberto; Goano, M.; ... (2024)
  Modeling self-heating in high-power non-circular VCSELs. In: 2024 IEEE Photonics Conference (IPC), Roma (Ita), 10-14 November 2024
  Contributo in Atti di Convegno (Proceeding)
• Torrelli, V.; Miri, L.; D'Alessandro, Martino; Gullino, Alberto.; de Gennaro, R.; ... (2024)
  Understanding polarization with gratings tilted to crystal axes: towards circularly-polarized VCSELs. In: 2024 IEEE Photonics Conference (IPC), Roma, 10-14 Novembre 2024. ISBN: 979-8-3503-6195-7
  Contributo in Atti di Convegno (Proceeding)
• Torrelli, V.; D'Alessandro, M.; Elsasser, W.; Debernardi, P. (2024)
  On-demand polarization by a vertical-cavity surface-emitting laser with two tilted sub-wavelength gratings. In: OPTICS LETTERS, vol. 49, pp. 3773-3776. ISSN 1539-4794
  Contributo su Rivista
• Torrelli, Valerio; Gullino, Alberto; Tibaldi, Alberto; Bertazzi, Francesco; Goano, ... (2024)
  High-Power Emission via Large-Area VCSELs With Single High-Order Mode Operation. In: IEEE PHOTONICS JOURNAL, vol. 16, pp. 1-7. ISSN 1943-0655
  Contributo su Rivista
• D'Alessandro, Martino; Torrelli, Valerio; Bertazzi, Francesco; Goano, Michele; ... (2024)
  Transverse Coupled Cavity VCSELs: Bridging Ultrabroadband Dynamics to Optical Supermodes. In: IEEE PHOTONICS JOURNAL, vol. 16, pp. 1-7. ISSN 1943-0655
  Contributo su Rivista
• Ledentsov, Nikolay; Shchukin, Vitaly A.; Chorchos, Lukasz; Makarov, Oleg Y.; Kropp, ... (2024)
  Analysis of laterally-coupled-cavity VCSELs for ultra-high-frequency photon-photon resonance modulation. In: SPIE Photonics West 2024 - Vertical-Cavity Surface-Emitting Lasers XXVIII, San Francisco (USA), 30 Gennaio 2024 - 1 Febbraio 2024, pp. 1-10
  Contributo in Atti di Convegno (Proceeding)
• Gullino, Alberto; Torrelli, Valerio; D'Alessandro, Martino; Tibaldi, Alberto; Bertazzi, ... (2024)
  AlGaAs Tunnel Junction (TJ)-VCSELs: A NEGF-Drift-Diffusion Approach. In: IEEE PHOTONICS JOURNAL, vol. 16, pp. 1-9. ISSN 1943-0655
  Contributo su Rivista
• Gullino, Alberto; Torrelli, Valerio; D’Alessandro, Martino; Tibaldi, Alberto; Bertazzi, ... (2023)
  Physics-based modeling of AlGaAs tunnel junction VCSELs: a comparative appraisal. In: 23rd International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2023), Turin, Italy, 18 - 21 September 2023, pp. 99-100. ISBN: 979-8-3503-1429-8
  Contributo in Atti di Convegno (Proceeding)
• Torrelli, Valerio; D’Alessandro, Martino; Miri, Lorenzo; Debernardi, Pierluigi; ... (2023)
  Analytical model of the Ultrabroadband Operation of Transverse-Coupled-Cavity VCSELs. In: 23rd International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2023), Turin, Italy, 18 - 21 September 2023, pp. 87-88. ISBN: 979-8-3503-1429-8
  Contributo in Atti di Convegno (Proceeding)
• Torrelli, Valerio; Tibaldi, Alberto; Bertazzi, Francesco; Goano, Michele; Debernardi, ... (2023)
  Modeling of single-mode high-power VCSEL arrays. In: 23rd International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2023), Turin, Italy, 18 - 21 September 2023, pp. 93-94. ISBN: 979-8-3503-1429-8
  Contributo in Atti di Convegno (Proceeding)
• Torrelli, Valerio; Montoya, Jesus Alberto Gonzalez; Tibaldi, Alberto; Debernardi, ... (2022)
  Modeling carrier transport in mid-infrared VCSELs with type-II superlattices and tunnel junctions. In: 2022 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Torino, Italia, 12-16 settembre 2022, pp. 55-56. ISBN: 978-1-6654-7898-4
  Contributo in Atti di Convegno (Proceeding)