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Diode laser frequency stabilisation for water-vapour differential absorption sensing

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Sensing of atmospheric trace gases is crucial for climate monitoring and to predict global climate changes. The required global coverage and spatial resolution have driven the studies of space-borne differential absorption lidar (DIAL) instruments to remot ...

IEEE2017

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An approach for a low-power chip-scale package is described, that provides a laser output with a programmable frequency across 50 nm of bandwidth centered at 1550 nm, and a resolution of one part in 10(14). ...

Ieee2016

Bringing short-lived dissipative Kerr soliton states in microresonators into a steady state

Tobias Kippenberg, Victor Brasch, Michael Wolfgang Geiselmann, Martin Hubert Peter Pfeiffer

Dissipative Kerr solitons have recently been generated in optical microresonators, enabling ultrashort optical pulses at microwave repetition rates, that constitute coherent and numerically predictable Kerr frequency combs. However, the seeding and excitat ...

Optical Society of America2016

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IIIV photonics on silicon is an active and promising research area. Here, we demonstrate room-temperature (RT) lasing in short-wavelength III-nitride photonic crystal nanobeam cavities grown on silicon featuring a single InGaN quantum well (QW). In the low ...

Amer Chemical Soc2015

750 nm 1.5 W frequency-doubled semiconductor disk laser with a 44 nm tuning range

Elyahou Kapon, Vladimir Iakovlev, Alexei Sirbu

We demonstrate 1.5 W of output power at the wavelength of 750 nm by intracavity frequency doubling a wafer-fused semiconductor disk laser diode-pumped at 980 nm. An optical-to-optical efficiency of 8.3% was achieved using a bismuth borate crystal. The wave ...

Optical Society of America2015

Absorptive Limiter for Frequency-Selective Circuits

This letter describes a novel absorptive limiter for frequency-selective circuits. The proposed circuit allows the design of absorptive limiters based on a bi-state phase shifter, which is appropriate for integration into channelizing devices, such as hybr ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Blue monolithic AlInN-based vertical cavity surface emitting laser diode on free-standing GaN substrate

Nicolas Grandjean, Jean-François Carlin, Antonino Francesco Castiglia, Gatien Cosendey, Georg Rossbach

We report on III-nitride based blue vertical cavity surface emitting lasers using defect-free highly reflective AlInN/GaN distributed Bragg reflectors grown on c-plane free-standing GaN substrates. Lasing is demonstrated at room temperature under pulsed el ...

American Institute of Physics2012

Recent Progress in Wafer-Fused VCSELs Emitting in the 1550-nm Band

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

Record-high fundamental mode output power of 1.5 mW at 100 degrees C is achieved with InAlGaAs-InP/AlGaAs-GaAs 1550 nm wavelength vertical cavity surface emitting lasers (VCSELs) produced by a modified wafer fusion technique. A broad wavelength setting on ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Depleted Bulk Heterojunction Colloidal Quantum Dot Photovoltaics

Michael Graetzel, Lioz Etgar

The first solution-processed depleted bulk heterojunction colloidal quantum dot solar cells are presented. The architecture allows high absorption with full depletion, thereby breaking the photon absorption/carrier extraction compromise inherent in planar ...

2011

Mid-infrared surface plasmon resonance sensing applied to refractive index measurements of liquids

Sylvain Herminjard

There has been a very strong development of the sensors based on surface plasmon resonance during the last thirty years, mostly for biological and biomedical applications. If the first experiments in this field were carried out at the beginning of the 20t ...

EPFL2010