Diego Piciocchi


Last Name

Piciocchi

First Name

Diego

ORCID

0000-0002-5983-9789

Organisational unit

03759 - Faist, Jérôme / Faist, Jérôme

Filters

2023 - 202519
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Publications 1 - 10 of 19
  • Strongly modulated broadband quantum cascade lasers for fast interleaving FTIR spectroscopy
    Item type: Other Conference Item
    Piciocchi, Diego; Cargioli, Alessio; Bertrand, Mathieu; et al. (2024)
    Summer School on Mid-Infrared Quantum Sensing and Technologies: Poster Session Book of Abstracts
  • Frequency comb shaping through staggered phase flux in fast gain lasers
    Item type: Conference Paper
    Piciocchi, Diego; Dikopoltsev, Alex; Heckelmann, Ina; et al. (2025)
    Conference lecture held on September 2, 2025
  • Quantum walk combs from the near-infrared to the terahertz
    Item type: Conference Paper
    Faist, Jérôme; Heckelmann, Ina; Dikopoltsev, Alex; et al. (2025)
    Technical Digest Series ~ 2025 Conference on Lasers and Electro-Optics (CLEO 2025)
    The fast gain saturation of semiconductor heterostructures allows the stabilization of a broad quantum walk combs. Applications of this concept is shown at optical frequencies from the terahertz to the near-IR at 1.55um.
  • On the dynamics of a 1D lattice driven by randomized forces
    Item type: Conference Paper
    Piciocchi, Diego; Heckelmann, Ina; Dikopoltsev, Alex; et al. (2025)
    Proceedings of SPIE ~ Quantum Sensing and Nano Electronics and Photonics XXI
    Quantum Walk Combs form in unidirectional circular lasers with fast saturable gain under resonant phase modulation. The modulation initiates coherent side-mode generation, exhibiting ballistic expansion—a quantum walk signature—until dispersion balances the modulation-induced coupling. The fast gain non-linearity allows stabilization on high-order eigenmodes of the coupled system, resulting in flat-topped high-bandwidth spectra. In this work, we investigate Quantum Walk Combs from Quantum Cascade Lasers under the effect of dynamic disorder, introduced by phase-modulating the resonant radio-frequency drive with Gaussian noise. Doing so, we uncover mobility transitions from the ballistic case with a Bessel-like envelope to diffusive states with Gaussian spectra, finally reaching exponentially localized states with arrested transport depending on the level of disorder. Time-resolved spectral evolution measurements and numerical simulations provide further insight into these dynamics.
  • Staggered Phase Flux for Frequency Comb Shaping in Fast Gain Lasers
    Item type: Other Conference Item
    Piciocchi, Diego; Dikopoltsev, Alex; Heckelmann, Ina; et al. (2025)
    2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
  • In-situ frequency comb shaping by multi-frequency injection in fast-gain lasers
    Item type: Other Conference Item
    Dikopoltsev, Alex; Piciocchi, Diego; Heckelmann, Ina; et al. (2025)
    Shaping of the spectrum of frequency comb sources is highly beneficial for application that require controllable optical source, such as ranging or communications. However, efficient in-situ reconfiguration of the spectrum is a challenge. We demonstrate spectral shaping of frequency combs in fast-gain active devices by engineering an Aharonov-Bohm phase in a synthetic frequency lattice. By modulating a fast gain circular laser at its resonance and twice this frequency with a relative phase, we created a triangular ladder in the modal space, where the phase added with staggered phase flux. This broke the time-reversal symmetry in the system, allowing for non-trivial gauge fields that manipulate the light. This enable the control over the frequency lattice dynamics, enabling full bandwidth tuning of a strong central lobe in a Quantum Cascade Laser comb. This paves the wave to new efficient and simple reconfigurable optical frequency comb sources.
  • Quench dynamics of fully popoulated bands in active synthetic photonic lattices
    Item type: Conference Poster
    Dikopoltsev, Alex; Heckelmann, Ina; Bertrand, Mathieu; et al. (2024)
  • Strongly Modulated Quantum Cascade Lasers for Broadband and Fast Doppler-Based FTIR Spectroscopy
    Item type: Conference Paper
    Cargioli, Alessio; Piciocchi, Diego; Bertrand, Mathieu; et al. (2023)
    2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
    The possibility of making reliable, fast and broadband spectroscopy in the Mid-IR region is extremely appealing, and it goes in hand with the availability of suitable light-sources. Here we prove that, by strongly RF modulating a Mid-Infrared Quantum Cascade Laser at low injection frequency compared to its natural repetition frequency it is possible to double its emission bandwidth up to 250. In addition, we show it can be used in combination with a Doppler based FTIR, opening the possibility to fast and broadband FTIR spectroscopy.
  • Manipulation of liquid light in fast-gain frequency-comb lasers
    Item type: Other Conference Item
    Dikopoltsev, Alex; Heckelmann, Ina; Piciocchi, Diego; et al. (2024)
    10th Workshop on the Physics and Technology of Semiconductor Lasers: Book of Abstracts
  • Quantum Walk Combs for spectroscopic applications
    Item type: Other Conference Item
    Heckelmann, Ina; Piciocchi, Diego; Dikopoltsev, Alex; et al. (2024)
    Summer School on Mid-Infrared Quantum Sensing and Technologies: Poster Session Book of Abstracts
Publications 1 - 10 of 19