Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Friedrich-schiller-universitat Jena

Leibniz-institut Fur Photonische Technologien E.v.

Thomas Gottschall

Jens Limpert

Andreas Tünnermann

Jürgen Popp

Tobias Meyer

Tobias Meyer-Zedler

Martin Baumgartl

A device for generating laser pulses is provided, the device having an optical parametric oscillator converts the laser pulses of a pump laser to laser pulses at a signal wavelength and at an idler wavelength. The optical parametric oscillator has an optical resonator with a non-linear wavelength converter. It is an object of the invention to provide a device that makes efficient generation of synchronous laser pulse trains with two different central wavelengths possible. To this end, the invention proposes that the pump laser is tunable with respect to the pump wavelength and the repetition frequency, wherein the resonator has an optical fibre with a dispersion in the range of 10-100 ps/nm and a length of 10-1000 m. The invention furthermore relates to a method for generating laser pulses using such a device.

Device and method for generating laser pulses

The invention relates to an apparatus for generating laser pulses. It is an object of the invention to provide a method for generating synchronized laser pulse trains at variable wavelengths (e.g., for coherent Raman spectroscopy/microscopy), wherein the switching time for switching between different wavelengths should be in the sub-&#x3bc;s range. For this purpose the apparatus according to the invention comprises

Generating synchronized laser pulses at variable wavelengths

The invention relates to an apparatus () for producing short synchronous radiation pulses at different wavelengths, particularly to an optically parametric oscillator, comprising at least one pump radiation source (), preferably a pump laser, for outputting radiation at a pump wavelength, and a resonator () having a wavelength-dependent effective resonator length, wherein the resonator () has a non-linear wavelength converter () for producing radiation at a first and a second wavelength; a dispersive element () having a strong wavelength-dependent delay characteristic; and a coupling-out element () for at least partially coupling-out the radiation from the resonator (). In addition, the invention relates to a method for producing short radiation pulses by means of an apparatus (), particularly an optically parametric oscillator.

Apparatus and method for producing short radiation pulses

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Jena, Germany

Thomas Gottschall