Optical pulse differentiation based on a resonant slow & fast light system

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Quasi-phase-matching (QPM) has become one of the most common approaches for increasing the efficiency of nonlinear three-wave mixing processes in integrated photonic circuits. Here, we provide a study of dispersion engineering of QPM second-harmonic (SH) g ...

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A light pulse source (100), being adapted for generating repetitive optical pulses (1), comprises a continuous wave cw laser device (10) being arranged for providing cw laser light (2), an optical waveguide (20) being optically coupled with the cw laser de ...

Light detection and ranging is widely used in science and industry. Over the past decade, optical frequency combs were shown to offer advantages in optical ranging, enabling fast distance acquisition with high accuracy. Driven by emerging high-volume appli ...

In the frame of the TCV Tokamak upgrade, two 84/126 GHz/2 s dual frequency gyrotrons designed by SPC and KIT and manufactured by THALES will be added to the existing EC-System. The first unit has been delivered to EPFL-SPC and tested. In the commissioning ...

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We demonstrate the hybrid-pumped (continuous-wave+pulsed) gain-switched smallcore thulium-doped fiber laser tunable in 1825-2064nm spectral range that delivers 50-300ns pulses with energies up to 12μJ (65μJ of injected pump) reaching performance of larger- ...

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Bloch surface waves (BSWs) are surface electromagnetic modes that propagate at the interface between a multilayer substrate and a homogeneous external medium. The optical field of the surface mode is confined near the surface of the multilayer. This vertic ...

The mid-infrared part of the optical spectrum is of high interest in a wide range of applications such as environmental gas monitoring, contaminant detection in the chemical, food or pharmaceutical industry, medical diagnosis, or defense and security. Rele ...

Many molecule bonds have vibration frequencies in the mid-infrared band. Thus, this band is of great interest to molecular spectroscopy, material processing and medical applications. However, many optical materials typically used for laser sources experien ...

Octave-spanning, self-referenced frequency combs are applied in diverse fields ranging from precision metrology to astrophysical spectrometer calibration. The octave-spanning optical bandwidth is typically generated through non-linear spectral broadening o ...

Femtosecond laser exposure of fused silica in the nonablative regime can lead to various localized bulk modifications of the material structure. In this paper, we show that these laser-induced modifications can be used to tune silica thermal expansion prop ...

Optical pulse differentiation based on a resonant slow & fast light system

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Broadband quasi-phase-matching in dispersion-engineered all-optically poled silicon nitride waveguides

Modes interplay controls the second harmonic generation dynamics of plasmonic nanostructures

Matrix Fourier optics enables a compact full-Stokes polarization camera

Wavefront shaping for ultrashort pulse delivery through optical fibers for imaging and ablation

Generating optical pulses via a soliton state of an optical microresonator coupled with a chip based semiconductor laser

Ultrafast optical ranging using microresonator soliton frequency combs

Megawatt power generation of the dual-frequency gyrotron for TCV at 84 and 126 GHz, in long pulses

Experimental station Bernina at SwissFEL: condensed matter physics on femtosecond time scales investigated by X-ray diffraction and spectroscopic methods

Using effective medium theories to design tailored nanocomposite materials for optical systems

Microjoule-level widely tunable gain-switched thuliumdoped fiber laser

Control of pulsed light propagation through multimode optical fibers

Near-field characterization of Bloch surface waves based 2D optical components

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

Development of coherent mid-infrared source using chalcogenide photonic crystal fibers

Octave-spanning dissipative Kerr soliton frequency combs in Si3N4 microresonators

Local tuning of fused silica thermal expansion coefficient using femtosecond laser