Publications associées à Laser construction

Self-injection Locked Second-Harmonic Generation in Optically Poled Silicon Nitride Microresonators

Tobias Kippenberg, Camille Sophie Brès, Junqiu Liu, Edgars Nitiss, Marco Clementi

We present a narrow-linewidth second-harmonic source based on a laser diode injection locked to an optically poled silicon nitride microresonator. The device is a compact, highly-coherent dual-wavelength source, with high conversion efficiency up to 280%/W ...

2023

Simulating supercontinua from mixed and cascaded nonlinearities

Luis Guillermo Villanueva Torrijo, Victor Brasch, Furkan Ayhan, Tobias Herr, Thibault Voumard

Nonlinear optical frequency conversion is of fundamental importance in photonics and underpins countless of its applications: Sum- and difference-frequency generation in media with quadratic nonlinearity permits reaching otherwise inaccessible wavelength r ...

AIP Publishing2023

Photonic assembly tunable via the pockels effect and method for use in frequency-modulated lidar

Tobias Kippenberg, Viacheslav Snigirev, Grigorii Likhachev

A photonic assembly, a laser setup comprising said photonic assembly and a method for performing frequency-modulated continuous-wave light detection and ranging using said laser setup are disclosed. The photonic assembly (1) comprises an active photonic ch ...

2023

High-useful yield and new autoionizing state of resonantly ionized tungsten

Reto Georg Trappitsch

In order to measure tungsten isotopic composition in presolar stardust grains that contain a limited number of atoms, we developed a new three-photon three-color resonance ionization scheme using titanium:sapphire lasers and the Laser Ionization of Neutral ...

ROYAL SOC CHEMISTRY2022

Gain-switched semiconductor laser driven soliton microcombs

Tobias Kippenberg, Junqiu Liu, Erwan Guillaume Albert Lucas, Wenle Weng, Jijun He

Using phase-engineered coherent laser pulses produced by gain-switched semiconductor lasers, we generate low-power-threshold soliton microcombs whose repetition frequencies are in the X-band and K-band microwave ranges. (c) 2021TheAuthor(s) ...

IEEE2021

Self-Injection Locking of a Gain-Switched Laser Diode

Andrey Voloshin

We experimentally observe a self-injection locking regime of the gain-switched laser to a high-Q optical microresonator. We reveal that the comb generated by the gain-switched laser experiences a dramatic reduction of comb-teeth linewidths in this regime. ...

American Physical Society (APS)2021

Ring a ring o' pulses

Quantum cascade lasers are bright and compact semiconductor lasers that emit light in the mid- to far-infrared spectral region. The use of a closed ring cavity has now set them on the path towards ultrafast pulses. ...

NATURE PUBLISHING GROUP2020

Enabling proximity mask-aligner lithography with a 193nm CW light source

Toralf Scharf, Wilfried Noell, Raoul Kirner, Andreas Vetter

We introduce a novel industrial grade 193nm continuous-wave laser light source for proximity mask-aligner lithography. A diode seed laser in master-oscillator power-ampliﬁcation conﬁguraton is frequency-quadrupled using lithiumtriborate and potassium-ﬂuoro ...

2018

Frequency Comb Stabilization of Ultrafast Lasers by Opto-Optical Modulation of Semiconductors

Sargis Hakobyan

In this paper, we review the current state and discuss new developments in opto-optical modulation (OOM) of semiconductor elements for frequency comb self-referenced stabilization of ultrafast lasers. This method has been successfully used for carrier-enve ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2018

Semiconductor-based narrow-line and high-brilliance 193-nm laser system for industrial applications

Toralf Scharf, Wilfried Noell, Raoul Kirner, Andreas Vetter, Xiaolong Wang

We present a novel industrial-grade prototype version of a continuous-wave 193 nm laser system entirely based on solid state pump laser technology. Deep-ultraviolet emission is realized by frequency-quadrupling an amplified diode laser and up to 20 mW of o ...

2018

Chip-Scale Frequency Comb Generators for High-Speed Communications and Optical Metrology

Tobias Kippenberg, Victor Brasch, Maxim Karpov, Arne Kordts

Chip-scale frequency comb sources are key elements for a variety of applications, comprising massively parallel optical communications and high-precision optical metrology. In this talk, we give an overview on our recent progress in the area of integrated ...

Spie-Int Soc Optical Engineering2017

Multi-mJ infrared femtosecond hydrogen Raman laser

Christoph Peter Hauri, Mostafa Shalaby

High-energy pulses at 1.28 mu m are demonstrated by stimulated Raman scattering in hydrogen using two chirped pulses of a Ti: Sapphire laser. The Stokes pulse carrying record-high energy of 4.4 mJ is recompressed to 80 fs. ...

Ieee2016

High-energy femtosecond hydrogen Raman laser

Christoph Peter Hauri, Mostafa Shalaby

High-energy pulses at 1.28 mu m are demonstrated by stimulated Raman scattering using two chirped pulses of a Ti:Sapphire laser in hydrogen. The Stokes pulse carrying record-high energy of 4.4 mJ is recompressed to 80 fs. ...

Ieee2016

Intense THz source based on BNA organic crystal pumped at Ti:sapphire wavelength

Christoph Peter Hauri, Mostafa Shalaby

We report on high-energy terahertz pulses by optical rectification (OR) in the organic crystal N-benzyl-2-methyl-4-nitroaniline (BNA) directly pumped by a conventional Ti:sapphire amplifier. The simple scheme provides an optical-to-terahertz conversion eff ...

Optical Soc Amer2016

85 W VECSEL output at 1270 nm with conversion efficiency of 59 %

Elyahou Kapon, Alexandru Mereuta, Vladimir Iakovlev, Alexei Sirbu, Andrei Caliman

We report on 1270 nm vertical-external-cavity surface-emitting lasers (VECSELs) with up to 59% conversion efficiency and maximum output power of 8.5 W (pump limited), at 5 degrees C heat sink temperature. These VECSELs comprised wafer-fused gain mirrors in ...

Optical Society of America2015

Intrinsic 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 Society2015

Terahertz emission in organic crystals pumped by conventional laser wavelength

Christoph Peter Hauri

Intense Terahertz radiation in organic crystals is typically generated by optical rectification of short wavelength infrared femtosecond lasers between 1.3 and 1.5 μm. In this wavelength range high energy ultrashort pump sources are hardly available. Here ...

2014

Simplified Brillouin fiber slow light systems in loss regime using step current modulation

Luc Thévenaz, Sang Hoon Chin

We propose a simple technique to realize Brillouin slow light in nearly transparent regime. A current-modulated semiconductor laser by a step function is used as Brillouin pump to generate a Brillouin loss doublet. ...

Optical Society of America2011

High-energy deep-UV temporal pulse shaping by chirp-assisted broadband frequency conversion

Christoph Peter Hauri

We present a novel and highly efficient temporal pulse shaping technique for the generation of flattop-like picosecond pulses in the deep UV. Using standard sum frequency generation (SFG) of a Ti:sapphire laser but with a pair of properly chirped beams pri ...

2011

Simple technique to achieve fast light in gain regime using Brillouin scattering

Luc Thévenaz, Sang Hoon Chin

We describe a novel technique based on stimulated Brillouin scattering for propagating fast light (signal advancement) with low distortion in optical fibers. The essence of the technique relies on the presence of two separate gain resonances in the Brillou ...

2007