公开(公告)号：US20210159661A1

公开(公告)日：2021-05-27

申请号：US16698159

申请日：2019-11-27

Applicant: TOPTICA Photonics AG

Inventor： Thomas A. Puppe ,  Christoph Tresp ,  Max Eisele ,  Christoph Skrobol

IPC: H01S3/137 ,  H01S3/11

Abstract: The invention relates to a laser device comprising a laser source (1), which is configured to emit pulsed laser radiation (2) with a spectrum in the form of a frequency comb having a plurality of equidistant spectral lines, an optical modulator (3), which is configured to shift the frequency of the laser radiation (2), and a control unit (10), which is configured to control the modulator (3) by means of a control signal (6). It is the object of the present invention to demonstrate an improved way, compared to the prior art, of generating an optical frequency comb that is stabilized in terms of the CEO frequency, in which the CE phase is also adjustable. To this end, the invention proposes that the laser radiation (2) emitted by the laser source (1) is stabilized in terms of the carrier-envelope frequency. Furthermore, the invention relates to a method of generating an optical frequency comb.

公开(公告)号：US10931078B2

公开(公告)日：2021-02-23

申请号：US16230012

申请日：2018-12-21

Applicant: TOPTICA Photonics AG

Inventor： Russell Keith Kliese ,  Thomas A. Puppe ,  Rafal Wilk ,  Matthias Hohenleutner ,  Ali Seer

IPC: H01S3/13 ,  H01S3/11 ,  H01S3/106

Abstract: A method for generating stabilized, pulsed laser radiation is disclosed, the method including at least the steps of generating pulsed laser radiation at a repetition frequency, wherein the spectrum of the pulsed laser radiation is a frequency comb having a number of equidistant spectral lines; deriving a first controlled variable from the pulsed laser radiation by means of phase comparison with a high-frequency reference signal; generating narrow-band continuous-wave laser radiation at a reference wavelength; setting the reference wavelength in accordance with a first manipulated variable derived from the first controlled variable; deriving a second controlled variable by means of superposition of the pulsed laser radiation and the continuous-wave laser radiation; and setting the repetition frequency in accordance with a second manipulated variable derived from the second controlled variable. A device for generating stabilized, pulsed laser radiation compatible with the method is also disclosed.

公开(公告)号：US09711935B2

公开(公告)日：2017-07-18

申请号：US15237379

申请日：2016-08-15

Applicant: TOPTICA Photonics AG

Inventor： Christian Rausch ,  Andreas Brodschelm ,  Nico Vieweg ,  Thomas A. Puppe

IPC: H01S3/10 ,  H01S3/13 ,  H01S3/09 ,  H01S3/105 ,  H01S3/23 ,  H01S3/067 ,  H01S3/136 ,  H01S3/11

CPC classification number: H01S3/1305 ,  H01S3/067 ,  H01S3/09 ,  H01S3/10046 ,  H01S3/10053 ,  H01S3/1053 ,  H01S3/1112 ,  H01S3/1118 ,  H01S3/1121 ,  H01S3/1307 ,  H01S3/136 ,  H01S3/1394 ,  H01S3/2383

Abstract: The invention relates to an apparatus for generating temporally spaced apart light pulses, comprising a first laser (11) which generates a first sequence (I) of light pulses at a first repetition rate, a second laser (12) which generates a second sequence (II) of light pulses at a second repetition rate, and at least one actuating member which influences the first repetition rate and/or the second repetition rate. It is an object of the invention to provide an apparatus for generating temporally spaced apart light pulses which is improved in relation to the prior art. This object is achieved by the invention by a control element (23) which applies a periodic modulation signal (24) to the actuating member for periodic variation of the first repetition rate and/or the second repetition rate, wherein the actuating member comprises a mechanical oscillator excited by the modulation signal (24), the deflection of said oscillator causing an adjustment in the resonator length of the first laser (11) and/or second laser (12), wherein the mechanical oscillator oscillates in resonant fashion at the frequency of the modulation signal (24). In accordance with the invention, an actuator (e.g. a piezo-actuator) which adjusts the resonator length of the laser is operated in resonant fashion. As a result, a large maximum time offset of the light-pulse sequences (I, II) with, at the same time, a high scanning speed is rendered possible. Moreover, the invention relates to a method for generating temporally spaced apart light pulses.