The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2025
Filed:
Sep. 30, 2019
Toptica Photonics Ag, Gräfelfing, DE;
Robert Herda, Munich, DE;
Axel Friedenauer, Hohenschaftlarn, DE;
Toptica Photonics AG, Gräfelfing, DE;
Abstract
It is an object of the invention to provide a method and a corresponding laser system that are simple and robust and that are able to provide sub-100 fs laser pulses using nonlinear frequency-conversion. The method of the invention comprises the steps of generating pulsed laser radiation at a fundamental wavelength, increasing the spectral bandwidth of the laser radiation by passing the laser radiation through a periodically poled nonlinear crystal material whose poling period is larger than or smaller than the poling period satisfying the quasi-phase-matching condition at the fundamental wavelength, and frequency-converting the spectrally broadened laser radiation. The laser system of the invention comprises a laser source generating pulsed laser radiation at a fundamental wavelength, a first periodically poled nonlinear crystal section arranged in the beam path and having a poling period larger than or smaller than the poling period satisfying the quasi-phase-matching condition at the fundamental wavelength to spectrally broaden the laser radiation, and a second periodically poled nonlinear crystal section arranged in the beam path downstream of the first section, wherein the second section is quasi-phase-matched at the fundamental wavelength to frequency-convert the laser radiation.