Concept

Laser pumping

Related publications (423)

Cristal composite SLAB pompé latéralement par diodes laser

This work presents the development of an original concept of a side pumped diode pumped crystal laser for the generation of a high power near diffraction limited beam for material processing applications such as cutting, marking and drilling. An approach b ...

EPFL2003

Molecular-beam/surface-science apparatus for state-resolved chemisorption studies using pulsed-laser preparation

Thomas Rizzo, Rainer Beck, Plinio Maroni, Mathieu Schmid

We describe a new apparatus that combines pulsed laser excitation in a molecular beam with surface-science methods for preparation of clean single-crystal surfaces and detection of adsorbates to enable state-selected studies of gas-surface reaction dynamic ...

2003

Highly efficient one- and two-cascade Raman lasers based on phosphosilicate fibers

René Salathé, Hans Georg Limberger, Florian Dürr, Marcel Zeller

Characteristics of one-cascade (1.06 double right arrow 1.24 mum) and two-cascade (1.06 double right arrow 1.24 double right arrow 1.48 mum) phosphorus-doped fiber Raman lasers are studied. The cavities of both lasers are formed by Bragg gratings written d ...

2003

Laser-assisted microstructuring for Ti : sapphire channel-waveguide fabrication

René Salathé, Patrik Willi Hoffmann, Cyrille Hibert

We report on the fabrication of Ti:sapphire channel waveguides. Such channel waveguides are of interest, e.g., as low-threshold tunable lasers. We investigated several structuring methods including ion beam implantation followed by wet chemical etching str ...

2003

Second harmonic generation with free running Nd : YAG laser

René Salathé, Thomas Sidler, Sébastian Favre

First results and analysis of second harmonic generation with a Nd:YAG laser working in the long pulse, free running mode are presented in this paper. Second harmonic generation conversion efficiencies of up to 17.5% and pulse powers of 162W have been gene ...

2003

Reliable laser micro-spot welding of copper

René Salathé, Thomas Sidler, Simone Amorosi

Nd:YAG laser welding of high reflectivity metals is difficult because of the highly non-linear light-material interaction yielding a narrow process window and poor reliability. However, achieving high reliability is mandatory for applying this technique in ...

2003

Modeling of near infrared pulsed laser sintering of metallic powders

Rémy Glardon, Valerio Romano, Cédric André

Using pulsed near infrared laser radiation for selective laser sintering bears several advantages compared to cw sintering such as low required average power, less residual heat and improved lateral precision. By adapting the pulse length (and thus the hea ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2003

Dependence of stimulated scattering in semiconductor microcavities on pump power, angle, and energy

Raphaël Butté

The dependence of stimulated polariton-polariton scattering in InGaAs/GaAs/AlGaAs microcavities on pump power, angle, and energy is investigated. We show that contrary to much previous belief there is no "magic angle" for stimulated scattering under contin ...

2003

Pump angle and laser energy dependence of stimulated scattering in microcavities

Raphaël Butté

We show that stimulated polariton scattering in a semiconductor microcavity is observable over a wide range of laser pump angles. The ratio of idler to signal beams is found to vary strongly with angle, consistent with the expected variation of the photon ...

Wiley-Blackwell2002

Light-current characterization of dual-wavelength VCSELs

Jean-François Carlin, Marc Ilegems

The purpose of this paper is to present a detailed characterization of a dual-wavelength VCSEL - the BiVCSEL. This device consists of two active optical cavities, which share a coupling mirror and can be independently electrically pumped. We present the ou ...

SPIE2002

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