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公开(公告)号：US11881682B2
公开(公告)日：2024-01-23
申请号：US17348971
申请日：2021-06-16
Applicant: TOPTICA Photonics AG
Inventor： Martin Enderlein , Manfred Hager , Thomas A. Puppe , Frank Lison
CPC classification number: H01S5/0687 , H01S3/1305 , H01S3/139 , H01S5/0092 , H01S5/0604 , H01S5/14
Abstract: The invention relates to a method for modulating the resonant frequency of an optical resonator (1) in accordance with a periodic, not necessarily harmonic, modulation signal (Umod(t)). Fast modulation of an optical resonator is intended to be made possible in which the current resonant frequency follows the modulation signal (Umod(t)) as precisely as possible, and specifically at a fundamental frequency of the modulation signal in the kHz range. To do this, the invention proposes the following method steps:
deriving an error signal (E(t)) from a light field circulating in the resonator (1), wherein the error signal (E(t)) indicates the deviation of the optical frequency of the light field from a target value,
deriving a first actuating signal (S1(t)) from the error signal (E(t)) by means of a controller (6),
generating a second actuating signal (S2(t)), which has actuating-signal components at one or more harmonics (fmod, 2fmod, . . . ) of the fundamental frequency (fmod) of the modulation signal (Umod(t)), and
applying a superposition signal made up of the first and the second actuating signal (S1(t), S2(t)) to an actuator (3) that changes the optical path length of the resonator (1). In other words, the invention makes use of a combination of control and narrow-band feed-forward control tuned to the spectrum of the modulation signal (Umod(t)) and of the error signal (E(t)) to modulate the resonant frequency. Preferably, the feed-forward control used for generating the second actuating signal (S2(t)) is automatically adapted in accordance with the error signal (E(t)). In addition, the invention relates to an accordingly configured optical system.-
公开(公告)号：US20170047705A1
公开(公告)日：2017-02-16
申请号：US15237379
申请日：2016-08-15
Applicant: TOPTICA Photonics AG
Inventor： Christian Rausch , Andreas Brodschelm , Nico Vieweg , Thomas A. Puppe
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.
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公开(公告)号：US20150357788A1
公开(公告)日：2015-12-10
申请号：US14729529
申请日：2015-06-03
Applicant: TOPTICA Photonics AG
Inventor： Thomas A. Puppe , Nico Vieweg , Armin Zach , Alexander Sell
CPC classification number: H01S3/1106 , G01J3/00 , G01J3/10 , H01S3/067 , H01S3/06712 , H01S3/08054 , H01S3/082 , H01S3/10046 , H01S3/107 , H01S3/1118 , H01S3/1304 , H01S3/1307 , H01S3/136 , H01S3/2383
Abstract: The invention relates to a device for generating temporally distant light pulses, said device comprising a first light source (51) generating a first sequence (I) of light pulses at a first repetition rate, and a second light source (52) generating a second sequence (II) of light pulses at a second repetition rate. It is the object of the present invention to provide an improved device for generating temporally distant light pulses. This object is inventively achieved by providing for at least one actuator element which influences the first and/or the second repetition rate, and a control element (61) which charges the actuator element with a periodical modulation signal (62) for periodical variation of the first and/or second repetition rate. A control circuit is provided for, comprising a phase detector (57), which derives a control signal (58) from the first light pulse sequence (I) and the second light pulse sequence (II), a corrective element (59, 60) which derives a control deviation signal (63) from the control signal (58) and the modulation signal (62), a control element (64), at the input of which the control deviation signal (63) is pending, and a superposition element (66) which forms an actuator signal (67) from the modulation signal (62) and the output signal (65) of the control element (64), and which charges the actuator element with the actuator signal (67). Moreover, the invention relates to a method for generating temporally distant light pulses.
Abstract translation: 本发明涉及一种用于产生时间上远的光脉冲的装置，所述装置包括以第一重复率产生光脉冲的第一序列（I）的第一光源（51）和产生第二重复频率的第二光源（52） 光脉冲的序列（II）以第二重复率。 本发明的目的是提供一种用于产生时间上远的光脉冲的改进的装置。 该目的通过提供影响第一和/或第二重复率的至少一个致动器元件和控制元件（61）来实现，该控制元件（61）用周期性调制信号（62）对致动器元件进行充电，用于周期性变化 第一和/或第二重复率。 提供了一种控制电路，包括相位检测器（57），其从第一光脉冲序列（I）和第二光脉冲序列（II）导出控制信号（58），校正元件（59,60） 其从所述控制信号（58）和所述调制信号（62）中导出控制偏差信号（63），控制元件（64）在控制偏差信号（63）待处理的输入端处，以及叠加元件 （66），其从所述调制信号（62）和所述控制元件（64）的输出信号（65）形成致动器信号（67），并且利用所述致动器信号（67）对所述致动器元件充电。 此外，本发明涉及一种用于产生时间上远的光脉冲的方法。
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公开(公告)号：US20230014323A1
公开(公告)日：2023-01-19
申请号：US17956578
申请日：2022-09-29
Applicant: Toptica Photonics AG
Inventor： Thomas A. Puppe , Christoph Tresp , Max Eisele , Christoph Skrobol
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.
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公开(公告)号：US10355440B2
公开(公告)日：2019-07-16
申请号：US14649284
申请日：2013-12-04
Applicant: Toptica Photonics AG
Inventor： Armin Zach , Thomas A. Puppe , Thomas Hellerer
Abstract: The invention relates to a method for the synthesis of electromagnetic radiation, wherein electromagnetic radiation having a spectrum comprising two or more spectral components is generated and phase setting of the electromagnetic radiation is performed. The invention proposes that the phase setting comprises phase shifting of the spectral components of the electromagnetic radiation, wherein the relative phase relationship of the spectral components is predeterminable. In addition, the invention relates to an apparatus for the synthesis of electromagnetic radiation, said apparatus comprising a pulsed laser (1), which generates a sequence of temporally equidistant light pulses, wherein the spectrum of the electromagnetic radiation of the pulsed laser (1) is the spectrum of an optical frequency comb, which is characterized by an offset frequency and a repetition rate. Furthermore, the apparatus has a phase setter (5), which effects phase setting of the electromagnetic radiation of the pulses laser (1). In accordance with the invention, the offset frequency of the spectral lines of the optical frequency comb is adjustable by time-proportional phase setting by means of the phase setter (5).
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Patent Agency Ranking
公开(公告)号：US20190199054A1
公开(公告)日：2019-06-27
申请号：US16230012
申请日：2018-12-21
Applicant: TOPTICA Photonics AG
Inventor： Russell Kliese , Thomas A. Puppe , Rafal Wilk , Matthias Hohenleutner , Ali Seer
CPC classification number: H01S3/1304 , H01S3/1109
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.
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公开(公告)号：US09685754B2
公开(公告)日：2017-06-20
申请号：US14729529
申请日：2015-06-03
Applicant: TOPTICA Photonics AG
Inventor： Thomas A. Puppe , Nico Vieweg , Armin Zach , Alexander Sell
IPC: H01S3/098 , H01S3/11 , H01S3/067 , G01J3/00 , H01S3/10 , H01S3/23 , H01S3/08 , H01S3/082 , H01S3/107 , H01S3/13 , H01S3/136
CPC classification number: H01S3/1106 , G01J3/00 , G01J3/10 , H01S3/067 , H01S3/06712 , H01S3/08054 , H01S3/082 , H01S3/10046 , H01S3/107 , H01S3/1118 , H01S3/1304 , H01S3/1307 , H01S3/136 , H01S3/2383
Abstract: A device for generating temporally distant light pulses is provided, the device including at least a first light source for generating a first sequence of light pulses at a first repetition rate, and a second light source for generating a second sequence of light pulses at a second repetition rate. In some embodiments the device includes at least one actuator element which influences the first and/or the second repetition rate, and a control element which charges the actuator element with a periodical modulation signal for periodical variation of the first and/or second repetition rate. A control circuit is also provided including at least a phase detector, a corrective element, a control element, and a superposition element that forms an actuator signal from a modulation signal and an output signal of the control element, and which charges the actuator element with the actuator signal.
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公开(公告)号：US20150303639A1
公开(公告)日：2015-10-22
申请号：US14649284
申请日：2013-12-04
Applicant: TOPTICA PHOTONICS AG
Inventor： Armin Zach , Thomas A. Puppe , Thomas Hellerer
CPC classification number: H01S3/0085 , G01J3/10 , G01J3/433 , G02F1/01 , H01S3/0078 , H01S3/1307
Abstract: The invention relates to a method for the synthesis of electromagnetic radiation, wherein electromagnetic radiation having a spectrum comprising two or more spectral components is generated and phase setting of the electromagnetic radiation is performed. The invention proposes that the phase setting comprises phase shifting of the spectral components of the electromagnetic radiation, wherein the relative phase relationship of the spectral components is predeterminable. In addition, the invention relates to an apparatus for the synthesis of electromagnetic radiation, said apparatus comprising a pulsed laser (1), which generates a sequence of temporally equidistant light pulses, wherein the spectrum of the electromagnetic radiation of the pulsed laser (1) is the spectrum of an optical frequency comb, which is characterized by an offset frequency and a repetition rate. Furthermore, the apparatus has a phase setter (5), which effects phase setting of the electromagnetic radiation of the pulses laser (1). In accordance with the invention, the offset frequency of the spectral lines of the optical frequency comb is adjustable by time-proportional phase setting by means of the phase setter (5).
Abstract translation: 本发明涉及一种用于合成电磁辐射的方法，其中产生具有包括两个或更多个光谱分量的光谱的电磁辐射，并且执行电磁辐射的相位设定。 本发明提出，相位设置包括电磁辐射的光谱分量的相移，其中光谱分量的相对相位关系是可预先确定的。 此外，本发明涉及一种用于合成电磁辐射的装置，所述装置包括脉冲激光器（1），其产生时间上等距的光脉冲序列，其中脉冲激光器（1）的电磁辐射的光谱 是光频梳的频谱，其特征在于偏移频率和重复率。 此外，该装置具有相位设定器（5），其实现脉冲激光器（1）的电磁辐射的相位设定。 根据本发明，通过相位设定器（5）通过时间比例相位设定来调节光频梳的谱线的偏移频率。
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公开(公告)号：US12266901B2
公开(公告)日：2025-04-01
申请号：US17956578
申请日：2022-09-29
Applicant: TOPTICA Photonics AG
Inventor： Thomas A. Puppe , Christoph Tresp , Max Eisele , Christoph Skrobol
IPC: H01S3/137 , H01S3/00 , H01S3/08 , H01S3/1106 , H01S3/13
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.
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公开(公告)号：US12228505B2
公开(公告)日：2025-02-18
申请号：US17342632
申请日：2021-06-09
Applicant: TOPTICA Photonics AG
Inventor： Thomas A. Puppe , Nico Vieweg , Christian Rausch
IPC: G01N21/3581
Abstract: 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.
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