Concept

Multiple-prism grating laser oscillator

Related publications (41)

Efficient Stimulated Raman Pumping for Quantum-State Resolved Surface Reactivity Measurements

Thomas Rizzo, Rainer Beck, Plinio Maroni

We describe the use of stimulated Raman pumping in a molecular beam to perform quantum state resolved gas-surface reactivity measurements for molecules prepared in totally symmetric vibrational states. Vibrational states of homonuclear diatomics as well as ...

2006

Multi-gas sensing based on photoacoustic spectroscopy using tunable laser diodes

Luc Thévenaz, Jean-Philippe Besson

Multi-hydrogenated compounds detection based on photoacoustic (PA) spectroscopy is reported. Three near-infrared semiconductor lasers are used with a resonant PA cell operated in its first longitudinal mode to monitor methane, water vapour and hydrogen chl ...

Elsevier2004

Ozone detection by differential absorption spectroscopy at ambient pressure with a 9.6 mu m pulsed quantum-cascade laser

Hubert van den Bergh, Bertrand Calpini, Valentin Simeonov, Jérôme Faist

We report direct absorption spectroscopic detection of ozone at ambient pressure with a pulsed, DFB quantum-cascade laser (QCL) tuned within 1044-1050 cm(-1) by temperature scanning. Wavelength calibration curves were derived from FTIR and CO2 spectra and ...

Springer-Verlag2004

Micro-photoluminescence of GaN quantum dots embedded in 100 nm wide cylindrical AIN pillars

Nicolas Grandjean, Yixing Chen

Individual pillars were etched from a sample embedding a single plane of GaN/AlN quantum dots, deposited by molecular beam epitaxy on a sapphire substrate. Pillars with diameters ranging from 0.1 to 5 mum were fabricated by electron-beam lithography and Si ...

2004

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

The dipole moment of HOCl in v(OH)=4

Thomas Rizzo, Patrice Theulé

Pulsed laser excitation and photofragment detection methods are used to observe the 17(0,17)

2003

Ethylene spectroscopy using a quasi-room-temperature quantum cascade laser

Luc Thévenaz, Philippe Robert

Spectroscopic measurements on ethylene were performed using a quasi-room-temperature quantum cascade (QC) laser operated in pulsed mode in the 10.3 μm range. Using transmission spectroscopy, a broadening of the ethylene absorption spectrum was observed wit ...

Elsevier2002

L'émission laser par diffusion Brillouin stimulée dans les fibres optiques

Among all scattering processes, spontaneous Brillouin scattering originates from the interaction between light and thermal acoustic waves propagating in the medium. The interference resulting from the incident light and its spontaneously backscattered frac ...

EPFL1997

Experimental investigation of high-power single-pass Raman shifters in the ultraviolet with Nd:YAG and KrF lasers

Hubert van den Bergh, Bertrand Calpini, Valentin Simeonov, Valentin Mitev, Laurent De Schoulepnikoff

Single-pass Raman cells pumped by either a quadrupled Nd:YAG (266-nm) laser or a KrF excimer laser are studied. The Raman-active gases comprise H2, D2, or CH4, as well as a mixt. of them, with the addn. of He, Ne, or Ar. A parametric study, in which the St ...

1997

Laser linewidth determination in the sub-Megahertz range using a Brillouin fibre laser

Luc Thévenaz, Philippe Robert

The Brillouin fibre laser has experimentally demonstrated its suitability for the measurement of laser linewidth in the 1 kHz to 500 kHz frequency range. A major advantage of this system is to be widely independent of the source wavelength by generating th ...

Telenor1996

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