Versatile short-wave and mid-infrared sources based on wideband parametric conversion

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Photonic integrated circuits (PICs) have revolutionized optical communication and precision metrology by enabling compact, scalable, and high-performance optical systems. However, conventional integrated laser sources suffer from limitations such as poor c ...

The misfolding of proteins from native monomers into β-sheet-rich fibrils via oligomers is a key hallmark of neurodegenerative diseases (NDDs). Identifying and screening drugs that inhibit protein aggregation for early disease intervention remains challeng ...

This special issue explores the dynamic and rapidly evolving field of optical computing, with a focus on guided nonlinear optics for information processing. Recent years have seen a resurgence of interest in this area [1], fuelled by groundbreaking experim ...

The Terahertz (THz) frequency domain lies between the realms of microwave and optics, with frequencies conventionally spanning the 0.1-10 THz spectral range [1]. Many commercially-available THz systems routinely exploits optical down/up conversion mechanis ...

A key component in developing atrial digital twins (ADT) - virtual representations of patients’ atria — is the accurate prescription of myocardial fibers which are essential for the tissue characterization. Due to the difficulty of reconstructing atrial fi ...

The ability to train ever-larger neural networks brings artificial intelligence to the forefront of scientific and technical discoveries. However, their exponentially increasing size creates a proportionally greater demand for energy and computational hard ...

For the EU DEMO conductor testing, a temperature sensor based on Fiber Bragg Grating (FBG) optical fiber is studied at the EPFL Swiss Plasma Center. The SULTAN test facility has been upgraded to use fiber optic sensor for temperature monitoring and quench ...

Hybrid photonic integrated lasers have revolutionized laser technology by combining the scalable manufacturing of simple laser diodes with high-performance features such as frequency stability, opticallinewidth, and tuning linearity [1], traditionally only ...

Infrared and Raman spectroscopies are ubiquitous techniques employed in many experimental laboratories, thanks to their fast and non-destructive nature able to capture materials' features as spectroscopic fingerprints. Nevertheless, these measurements freq ...

Crystallization of amorphous layers has been demonstrated under various radically different laser-exposure conditions, including continuous wave (cw) and pulsed lasers. Here, we investigate the specific role of ionization in the crystallization of dielectr ...

Glass has been the material of choice for making optical elements, in large part due to its intrinsic properties: a temperature-dependent viscosity, which enables shaping the material into a broad variety of functional and artistic glassware. Silica glass ...

Diode effects are of great interest for both fundamental physics and modern technologies. Electrical diode effects (nonreciprocal transport) have been observed in Weyl systems. Optical diode effects arising from the Weyl fermions have been theoretically co ...

We demonstrate a figure-of-9 all-fiber thulium-doped laser (TDFL) that generates 560 fs long pulses at 1948 nm wavelength. In order to achieve self-starting passive mode-locking, we utilize an in-fiber Faraday rotator to induce a nonreciprocal phase shift. ...

The optical domain presents potential avenues for enhancing both computing and communication due to its inherent properties of bandwidth, parallelism, and energy efficiency. This research focuses on harnessing 3-Dimensional (3D) diffractive optics for nove ...

In this thesis work, we propose to exploit an innovative micro/nano-fabrication process, based on controlled fluid instabilities of a thin viscous film of chalcogenide glass. Amorphous selenium and arsenic triselenide were used in this thesis work, and com ...

Photonic integrated circuits are paving the way for novel on-chip functionalities with diverse applications in communication, computing, and beyond. The integration of on-chip light sources, especially single-mode lasers, is crucial for advancing those pho ...

Lanthanides are versatile modulators of optoelectronic properties owing to their narrow optical emission spectra across the visible and near-infrared range. Their use in metal halide perovskites (MHPs) has recently gained prominence, although their fate in ...

Stoichiometric silicon nitride is a highly regarded platform for its favorable attributes, such as low propagation loss and compatibility with complementary metal-oxide-semiconductor technology, making it a prominent choice for various linear and nonlinear ...

Recently, nonreciprocal two-dimensional unitary scattering networks have gained considerable interest due to the possibility of obtaining robust edge wave propagation in their anomalous topological insulating phase. However, zero-dimensional states in such ...

This thesis presents the development, construction, and benchmark of an experimental platform that combines cold fermionic 6Li atoms with locally controllable light-matter interactions. To enable local control, a new device, the cavity-microscope, was crea ...

Versatile short-wave and mid-infrared sources based on wideband parametric conversion

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Low-noise, frequency-agile photonic integrated lasers

Nanoplasmonic Infrared Microarray Sensor Enabling Structural Protein Biomarker-Based Drug Screening for Neurodegenerative Diseases

Guided Nonlinear Optics for Information Processing

Field-Resolved Detection of Broadband Terahertz Pulses with Thin-Film Lithium Niobate Integrated Microring Resonators

Defining myocardial fiber bundle architecture in atrial digital twins

Training hybrid neural networks with multimode optical nonlinearities using digital twins

Quench Detection and Temperature Measurement With Fiber Optic Sensors

Ultrafast Tunable Photonic Integrated Extended-DBR Pockels Laser

Automated all-functionals infrared and Raman spectra

Influence of ionization and cumulative effects on laser-induced crystallization in multilayer dielectrics

Laser-based manufacturing of freeform glass micro-optics through topological transformation

Nonlinear optical diode effect in a magnetic Weyl semimetal

Wavelength-stabilized figure-of-9 thulium-doped all-fiber laser emitting 560 fs pulses

3D diffractive optics for linear interconnects and nonlinear processing

All-Dielectric Nanophotonic via Glass Fluid Instabilities

Single-Mode Laser in the Telecom Range by Deterministic Amplification of the Topological Interface Mode

Speciation of Lanthanide Metal Ion Dopants in Microcrystalline All-Inorganic Halide Perovskite CsPbCl3

Silicon nitride electric-field poled microresonator modulator

Disclination states in nonreciprocal topological networks

A Cavity-Microscope for Quantum Simulations with Locally-Controllable All-to-All Interactions