0000000000122977

AUTHOR

Thijs Wendrich

showing 2 related works from this author

Autonomous frequency stabilization of two extended cavity diode lasers at the potassium wavelength on a sounding rocket

2016

We have developed, assembled, and flight-proven a stable, compact, and autonomous extended cavity diode laser (ECDL) system designed for atomic physics experiments in space. To that end, two micro-integrated ECDLs at 766.7 nm were frequency stabilized during a sounding rocket flight by means of frequency modulation spectroscopy (FMS) of 39^K and offset locking techniques based on the beat note of the two ECDLs. The frequency stabilization as well as additional hard- and software to test hot redundancy mechanisms were implemented as part of a state-machine, which controlled the experiment completely autonomously throughout the entire flight mission.

Physics - Instrumentation and DetectorsAtomic Physics (physics.atom-ph)Materials Science (miscellaneous)FOS: Physical sciencesBeat (acoustics)01 natural sciencesIndustrial and Manufacturing Engineeringlaw.inventionPhysics - Atomic Physics010309 opticsOpticslaw0103 physical sciencesRedundancy (engineering)Business and International ManagementFrequency modulation spectroscopy010306 general physicsDiodePhysicsSounding rocketbusiness.industryInstrumentation and Detectors (physics.ins-det)LaserWavelengthFrequency stabilizationAtomic physicsbusiness
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Space-borne Bose–Einstein condensation for precision interferometry

2018

Space offers virtually unlimited free-fall in gravity. Bose-Einstein condensation (BEC) enables ineffable low kinetic energies corresponding to pico- or even femtokelvins. The combination of both features makes atom interferometers with unprecedented sensitivity for inertial forces possible and opens a new era for quantum gas experiments. On January 23, 2017, we created Bose-Einstein condensates in space on the sounding rocket mission MAIUS-1 and conducted 110 experiments central to matter-wave interferometry. In particular, we have explored laser cooling and trapping in the presence of large accelerations as experienced during launch, and have studied the evolution, manipulation and interf…

Atomic Physics (physics.atom-ph)FOS: Physical sciencesSpace (mathematics)01 natural sciencesPhysics - Atomic Physicslaw.invention010309 opticslawLaser cooling0103 physical sciencesAstronomical interferometer010306 general physicsQuantumCondensed Matter::Quantum GasesPhysicsMultidisciplinaryBragg's lawinterferometryBose-EinsteinComputational physicsInterferometryQuantum Gases (cond-mat.quant-gas)QuasiparticleAtomic physicsCondensed Matter - Quantum GasesBose–Einstein condensateNature
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