Max-planck-gesellschaft Zur Forderung Der Wissenschaften E.v.

Universitat Basel

Theodor W Hansch

Thomas Udem

Ronald Holzwarth

Philipp Treutlein

Pascal Bohi

Martin Weitz

Max F Riedel

Tilman Heupel

A device for sensing a microwave magnetic field polarization component (B, B, B) of a microwave relative to a static magnetic field B, comprising a preparation means to prepare atomic vapor () comprising thermal atoms in a first hyperfine state, particularly a dark state to applied laser light, which first hyperfine state is split from other hyperfine state due to zero-field hyperfine splitting and/or due to a static magnetic field (B) generated by preparation means, at least one cell enclosing the thermal atoms (), the microwave is adapted to drive Rabi oscillations of thermal atoms between first hyperfine state and second hyperfine state, Rabi frequency of Rabi oscillations being proportional to magnetic field polarization component (B, B, B) of the microwave, and imaging means to capture state image of plurality of atoms representing spatial atomic density distribution (N) as a function of the Rabi frequency (&#x3a9;(r)) of Rabi oscillations.

Simple microwave field imaging device

The invention relates to a method for producing radio frequency waves, whereby a pulse laser for producing light pulses having a predetermined spectrum of frequency modes and a predetermined recurrence frequency is operated. The light pulses of the pulse laser are detected by means of a detector device, and corresponding electrical output signals forming the radio frequency signals are produced. Said pulse laser is actuated in a stabilized manner by means of an optical reference signal in such a way that the recurrence frequency of the light pulse is fixed. The invention also relates to a radio frequency generator for implementing said method.

Method and device for producing radio frequency waves

For the generation of amplified, phase-coherent light pulses, a sequence of phase-coherent, equidistant input light pulses (21) is coupled into a resonator device (1) with at least two resonator mirrors (11, 14), forming a light path (10) with a predetermined resonator length, in such a way that the coupled in input light pulses in the resonator device are linearly superimposed in succession to form at least one circulating light pulse, whereby the circulating light pulse is coupled out of the resonator device as an output light pulse (31) as soon as the circulating light pulse has reached a preset minimum level of energy.

Method and device for generating phase-coherent light pulses

Growing community of inventors

Munich, Germany

Theodor W Hansch