0000000000732771

AUTHOR

S. Götte

showing 3 related works from this author

An evaluation procedure for scanning interferometer based wavemeters

2004

Abstract A common approach to wavelength measurement is the travelling interferometer (wavemeter). We present an evaluation procedure that allows to achieve high precision with a compact device. The zero crossings of the interference signal corresponding to the reference laser is used to sample the signal of the probe laser. Electronic noise and fluctuations of the laser frequency cancel due to the large number of sample points. The evaluation procedure has been applied to a wavemeter based on a continuously moving Mach–Zehnder interferometer. A travelling path of 10 cm was sufficient to yield 3σ-accuracy of Δ λ / λ =3.2×10 −9 , demonstrated by comparison with cesium saturation spectroscopy.

PhysicsSignal processingbusiness.industryInterference (wave propagation)LaserAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionInterferometryWavelengthOpticslawElectrical and Electronic EngineeringPhysical and Theoretical ChemistryLaser frequencySpectroscopybusinessSaturation (magnetic)Optics Communications
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Isotope-shift measurements of stable and short-lived lithium isotopes for nuclear-charge-radii determination

2010

Changes in the mean-square nuclear charge radii along the lithium isotopic chain were determined using a combination of precise isotope shift measurements and theoretical atomic structure calculations. Nuclear charge radii of light elements are of high interest due to the appearance of the nuclear halo phenomenon in this region of the nuclear chart. During the past years we have developed a new laser spectroscopic approach to determine the charge radii of lithium isotopes which combines high sensitivity, speed, and accuracy to measure the extremely small field shift of an 8 ms lifetime isotope with production rates on the order of only 10,000 atoms/s. The method was applied to all bound iso…

Atomic Physics (physics.atom-ph)Isotopes of lithiumFOS: Physical scienceschemistry.chemical_elementHalo nucleus01 natural sciencesEffective nuclear chargePhysics - Atomic PhysicsNuclear physics0103 physical sciencesPhysical Sciences and MathematicsPhysics::Atomic PhysicsNuclear Experiment (nucl-ex)Nuclear Experiment010306 general physicsNuclear ExperimentPhysicsIsotope010308 nuclear & particles physicsPhysicsAlkali metalAtomic and Molecular Physics and OpticsIsotopes of nitrogen3. Good healthchemistryLithiumAtomic numberAtomic physicsPhysical Review A
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<title>New PW stretcher-compressor design for PHELIX laser</title>

2005

With PHELIX (Petawatt High Energy Laser for heavy Ion EXperiments) a high energy/ultra-high intensity laser system is currently under construction at the GSI (Gesellschaft fur SchwerIonenforschung, Germany). In combination with the high current high energy ion accelerator facility this will provide worldwide unique experimental opportunities in the field of dense plasma physics and inertial fusion research. In the long pulse mode the laser system will provide laser pulses of up to 5 kJ in 1-10 ns pulses. In the high intensity mode pulse powers in excess of 1 PW will be achieved. For this the well known technique of chirped pulse amplification (CPA) will be implemented. A new CPA stretcher-c…

Chirped pulse amplificationOptical amplifierEngineeringbusiness.industryPhelixFusion powerLaserlaw.inventionPulse (physics)OpticslawPulse compressionChirpbusinessSPIE Proceedings
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