Publication
Laser-assisted growth of carbon nanotubes on laser-patterned substrates and inside sealed micro-channels
Publications associées (38)
On the interaction of femtosecond laser pulses with layered dielectric materials
Materials properties are strictly dependent on their microstructure. The internal symmetries and the disposition of the constituting atoms of a material, which depend on its crystallographic structure, greatly affect its response to mechanical, electromagn ...
EPFL2023Modulating the properties of DNA-SWCNT sensors using chemically modified DNA
Ardemis Anoush Boghossian, Benjamin Paul Johanès Gabriel Lambert, Alice Judith Gillen, Alessandra Antonucci, Daniel Molina Romero
Properties of SWCNT-based sensors such as brightness and detection capabilities strongly depend on the characteristics of the wrapping used to suspend the nanotubes. In this study, we explore ways to modify the properties of DNA-SWCNT sensors by us- ing ch ...
2021An effective rule for translating optimal selective laser melting processing parameters from one material to another
Roland Logé, Jamasp Jhabvala, Eric Boillat, Rita Drissi Daoudi, Hossein Ghasemi Tabasi, Toni Ivas
Selective Laser Melting (SLM) or Laser Powder Bed Fusion (L-PBF) is the most studied laser-based additive manufacturing process for metals and alloys. One important issue in SLM is the time-consuming identification of a process window leading to quasi full ...
2020Elastic properties of self-organized nanogratings produced by femtosecond laser exposure of fused silica
Yves Bellouard, Pieter Vlugter
Under certain exposure conditions, a femtosecond laser beam focused in the bulk of fused silica leads to the formation of self-organized structures consisting of a series of “nanolayers,” parallel to one another. Remarkably, this laser-induced nanoscale an ...
2020Integrated Si3N4 Soliton Microcomb Driven by a Compact Ultra-low-noise Laser
Tobias Kippenberg, Rui Ning Wang, Nicolas Volet, Junqiu Liu, Erwan Guillaume Albert Lucas, Arslan Sajid Raja, Jijun He
We generate 100-GHz soliton microcombs in a photonic integrated high-Q Si3N4 microresonator using an ultra-compact, high-power and low-frequency-noise semiconductor-based laser. The soliton is initiated via direct current tuning of the laser. (C) 2019 The ...
IEEE2019A device and method for increased light transmission through cochlear bone by laser ablation for in situ intracochlear imaging
Demetri Psaltis, Donald Benjaman Conkey, Marilisa Romito
A method for visualizing structures inside a cochlea, comprising the steps of irradiating a cochlear bone with a first laser light to ablate portions of the cochlear bone, to form a thinned area of the cochlear bone, and imaging intracochlear structures by ...
2017Towards an Integrated-Photonics Optical-Frequency Synthesizer With < 1 Hz Residual Frequency Noise
Tobias Kippenberg, Nicolas Volet, Martin Hubert Peter Pfeiffer
We introduce an architecture for optical-frequency synthesis using photonic-chip frequency combs and a heterogeneously integrated CW laser. The Kerr dual-comb that we describe offers a microwave-optical link to discipline the laser to an RF clock. ...
Ieee2017A 1.5-W frequency-doubled semiconductor disk laser tunable over 40 nm at around 745 nm
Elyahou Kapon, Vladimir Iakovlev, Alexei Sirbu
We report on a semiconductor disk laser emitting 1.5 W of output power at the wavelength of 745 nm via intracavity frequency doubling. The high power level and the >40 nm tuning range make the laser a promising tool for medical treatments that rely on phot ...
Spie-Int Soc Optical Engineering2016Intrinsic emittance reduction of copper cathodes by laser wavelength tuning in an rf photoinjector
Christoph Peter Hauri, Thomas Schietinger
With the improvement of acceleration techniques, the intrinsic emittance of the cathode has a strong impact on the final brightness of a free electron laser. The systematic studies presented in this paper demonstrate for the first time in a radiofrequency ...
American Physical Society2015Study of physical phenomena of selective laser melting towards increased productivity
This thesis presents an experimentally focused study of three of the key physical phenomena of the Selective Laser Melting (SLM) process. The SLM process increasingly gains momentum in industrial applications. As awareness of the process and its capabiliti ...
EPFL2015