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:
Sep. 15, 2026
Filed:
Mar. 22, 2022
Max-planck-gesellschaft Zur Foerderung Der Wissenschaften E. V., Munich, DE;
Ernst Fill, Garching, DE;
Maximilian Hoegner, Garching, DE;
Ferenc Krausz, Garching, DE;
Ioachim Pupeza, Garching, DE;
Ann-Kathrin Raab, Garching, DE;
Liudmila Voronina, Garching, DE;
Mihaela Zigman, Garching, DE;
Abstract
A method of passively enhancing pulsed laser light by coherent addition of laser pulses in an enhancement cavity () comprises the steps of generating a sequence of seed laser pulses () with a repetition frequency frep and a frequency comb spectrum () comprising frequency comb lines () with frequency comb line spacings equal to the repetition frequency frep, coupling the seed laser pulses () via a first plate-shaped coupling element () into an enhancement cavity () comprising at least two cavity mirrors () having metallic surfaces and spanning a cavity beam path () with a resonator length L, wherein the enhancement cavity () has a fundamental transverse mode TEMand higher-order transverse cavity modes TEMnm, each with a series of cavity resonance frequencies (), and a cavity offset frequency (), and coherent superposition of the seed laser pulses () in the enhancement cavity (), so that at least one enhanced circulating cavity pulse () per cavity length is generated, wherein the frequency comb spectrum () is a harmonic frequency comb spectrum () with a vanishing seeding comb offset frequency, the enhancement cavity () is adjusted such that a round-trip carrier-envelope phase slippage of the circulating cavity pulsesis equal to 360°/N for the fundamental transverse mode TEM, N being an integer number equal to or above (2), and a frequency overlap is provided for a plurality of the cavity resonance frequencies () with a plurality of the frequency comb lines () along the frequency comb spectrum (). Furthermore, a laser pulse enhancement apparatus and applications thereof, e. g. in field-resolved spectroscopy, are described.