Toptica Photonics Ag

Christian Rausch

Thomas A Puppe

Nico Vieweg

Florian Tauser

Andreas Brodschelm

Manfred Hager

Jörg Lembach

Alf Rieckmann

The invention relates to a device for generating temporally spaced light pulses. Said device comprises a first light source which emits a first train of light pulses, a second light source which emits a second train of light pulses, and a phase-locked loop which regulates the relative phase of the light-pulse trains towards a target value. When the two light-pulse trains each pass through an optical transmission path to an application site that is spatially remote from the light sources, fluctuating phase differences in the light-pulse trains at the application site occur due to external influences along the transmission paths. The object of the invention is to provide an improved device for generating temporally spaced light pulses. In particular, the above-mentioned fluctuating phase differences are intended to be prevented. To do this, the invention proposes a detection apparatus that interacts with the phase-locked loop and detects a phase difference in the light-pulse trains at the application site caused by propagation-time differences along the transmission paths. In particular, the phase difference in the light-pulse trains at the application site is derived from light pulses that are reflected from the application site and pass through the transmission paths in the return direction. The detected phase difference can then be compensated for by the existing regulation of the relative phase of the light-pulse trains. In addition, the invention relates to a method for generating temporally spaced light pulses.

Optical scanning

The invention relates to an illumination device, in particular for a confocal microscope. The object of the invention is to provide an illumination device which operates with a plurality of current-modulated semiconductor-based light sources, in which the light emission is as free as possible from distortions due to dynamic delays of the light emission in the output beam. To this end, the proposed illumination device comprises:

Illumination device for a confocal microscope

The invention relates to an apparatus for generating temporally spaced apart light pulses, comprising

A device for generating light pulses that are separated in terms of time has a light source that emits a sequence of light pulses. A regulation signal is formed within a regulation circuit from a cycle signal and the light pulse sequence of the light sources via a phase detector. The regulation circuit includes a regulator that generates a setting signal that influences the repeat frequency of the light pulse sequence of the light source.

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Unterhaching, Germany

Christian Rausch