公开(公告)号：US11796392B2

公开(公告)日：2023-10-24

申请号：US18063213

申请日：2022-12-08

Applicant: IRsweep AG

Inventor： Stéphane Schilt ,  Pierre Brochard ,  Kenichi Komagata ,  Giulio Terrasanta ,  Andreas Hugi

IPC: G01J3/433 ,  G01J3/10 ,  H01S5/40 ,  H01S5/062 ,  G01J3/42

CPC classification number: G01J3/433 ,  G01J3/10 ,  H01S5/0623 ,  H01S5/4006 ,  G01J2003/102 ,  G01J2003/423 ,  G01J2003/4332

Abstract: A dual-comb spectrometer comprising two lasers outputting respective frequency combs having a frequency offset between their intermode beat frequencies. One laser acts as a master and the other as a follower. Although the master laser is driven nominally with a DC drive signal, the current on its drive input line nevertheless oscillates with an AC component that follows the beating of the intermode comb lines lasing in the driven master laser. This effect is exploited by tapping off this AC component and mixing it with a reference frequency to provide the required frequency offset, the mixed signal then being supplied to the follower laser as the AC component of its drive signal. The respective frequency combs in the optical domain are thus phase-locked relative to each other in one degree of freedom, so that the electrical signals obtained by multi-heterodyning the two optical signals are frequency stabilized.

公开(公告)号：US09671216B1

公开(公告)日：2017-06-06

申请号：US15017829

申请日：2016-02-08

Applicant: Francesco Narducci ,  Brandi Gerstner

Inventor： Francesco Narducci ,  Brandi Gerstner

IPC: H03L7/00 ,  H03L7/26 ,  G01J9/02 ,  H01S3/10 ,  H01S3/13 ,  H01S5/00 ,  G01B9/02 ,  H01S5/042 ,  H01S5/0687 ,  G21K1/00

CPC classification number: G21K1/006 ,  H01S5/0623 ,  H01S5/1096

Abstract: The present invention is directed to a modulated which includes a semiconductor laser being driven by direct current for frequency tuning, and an AC current with two radio frequencies that can generate repump and Raman frequencies, such that only one laser is needed to produce all the frequencies required to operate an atom interferometer. The present invention is also directed to a method of double modulating a laser to produce all required frequencies for an atom interferometer.

公开(公告)号：US20160254646A1

公开(公告)日：2016-09-01

申请号：US15053876

申请日：2016-02-25

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Jiang LI ,  Kerry VAHALA

IPC: H01S5/0687 ,  H01S5/04 ,  H01S5/062 ,  H01S5/068 ,  H01S5/40 ,  H01S5/00

CPC classification number: H01S5/0687 ,  H01S3/0085 ,  H01S3/0627 ,  H01S3/06791 ,  H01S3/1304 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/2391 ,  H01S3/30 ,  H01S5/0078 ,  H01S5/041 ,  H01S5/0623 ,  H01S5/06817 ,  H01S5/40 ,  H03B17/00 ,  H03L7/00

Abstract: Microwave-frequency signal generation by generating multiple sideband optical signals separated by phase-modulation frequency fM, generating beat signals between one or two sidebands and one or two optical reference signals, generating a loop-filtered error signal by comparing an electrical reference signal to one of the beat signals or their difference, and controlling with the error signal in a phase-locked loop arrangement a voltage-controlled oscillator (VCO) that drives the sideband generation at the frequency fM. A portion of the VCO output is the generated microwave-frequency signal.

Abstract translation: 通过产生由相位调制频率fM分离的多个边带光信号产生微波频率信号，在一个或两个边带之间产生拍频信号和一个或两个光参考信号，通过将电参考信号与一个电参考信号进行比较来产生环路滤波误差信号 的差分信号或它们的差异，并且以锁相环布置中的误差信号进行控制，该压控振荡器（VCO）以频率fM驱动边带产生。 VCO输出的一部分是产生的微波频率信号。

公开(公告)号：US09391420B2

公开(公告)日：2016-07-12

申请号：US14859706

申请日：2015-09-21

Applicant: Sandia Corporation

Inventor： Michael C. Wanke

IPC: H01S3/10 ,  H01S3/08 ,  H01S3/109 ,  H01S5/34 ,  H01S5/026 ,  H01S5/062

CPC classification number: H01S3/08027 ,  H01S3/08036 ,  H01S3/109 ,  H01S5/026 ,  H01S5/0262 ,  H01S5/0604 ,  H01S5/0605 ,  H01S5/0623 ,  H01S5/0651 ,  H01S5/0657 ,  H01S5/068 ,  H01S5/1046 ,  H01S5/1096 ,  H01S5/3401 ,  H01S2302/02

Abstract: Rather than down-convert optical frequencies, a QCL laser system directly generates a THz frequency comb in a compact monolithically integrated chip that can be locked to an absolute frequency without the need of a frequency-comb synthesizer. The monolithic, absolute frequency comb can provide a THz frequency reference and tool for high-resolution broad band spectroscopy.

Abstract translation: QCL激光系统不是降频转换光频，而是在紧凑的单片集成芯片中直接产生一个THz频率梳，可以锁定到绝对频率，而不需要频梳合成器。 单片绝对频率梳可提供用于高分辨率宽带光谱的THz频率参考和工具。

公开(公告)号：US20150180204A1

公开(公告)日：2015-06-25

申请号：US14576675

申请日：2014-12-19

Applicant: Seiko Epson Corporation

Inventor： Satoshi TAKENAKA ,  Yuji KURACHI

IPC: H01S5/183

CPC classification number: H01S5/183 ,  G04F5/145 ,  H01S5/02276 ,  H01S5/0425 ,  H01S5/0623 ,  H01S5/0687 ,  H01S5/18311 ,  H01S5/18338 ,  H01S5/18347 ,  H01S5/1835 ,  H01S5/18352 ,  H01S5/18355 ,  H01S5/18372 ,  H01S5/3201 ,  H01S2301/176

Abstract: A vertical cavity surface emitting laser includes: a substrate; a laminated body which is provided over the substrate; an electrode of which at least a portion is provided over the laminated body; and a pad which is connected to the electrode, wherein the laminated body includes a first mirror layer provided over the substrate, an active layer provided over the first mirror layer, and a second mirror layer provided over the active layer, in a plan view, the laminated body includes a first distortion imparting portion, a second distortion imparting portion, and a resonance portion which is provided between the first distortion imparting portion and the second distortion imparting portion and resonates light generated in the active layer, and in the plan view, the pad is provided in a position that is not overlapped with at least one of the first distortion imparting portion and the second distortion imparting portion.

Abstract translation: 垂直腔表面发射激光器包括：衬底; 设置在基板上的层叠体; 在层叠体上设置有至少一部分的电极; 以及连接到所述电极的焊盘，其中所述层叠体包括设置在所述基板上的第一反射镜层，设置在所述第一镜面层上的有源层，以及设置在所述有源层上的第二镜像层， 层叠体包括第一变形赋予部，第二变形赋予部，以及设置在第一变形赋予部和第二变形赋予部之间的谐振部，并且谐振在有源层中产生的光，在俯视图中， 衬垫设置在与第一变形赋予部和第二变形赋予部中的至少一个不重叠的位置。

公开(公告)号：US08476592B2

公开(公告)日：2013-07-02

申请号：US12908628

申请日：2010-10-20

Applicant: Min Yong Jeon ,  Kyung Hyun Park ,  Dae-Su Yee

Inventor： Min Yong Jeon ,  Kyung Hyun Park ,  Dae-Su Yee

IPC: G01J5/02

CPC classification number: H01S5/0623 ,  G02F2/002 ,  H01S1/02 ,  H01S5/141 ,  H01S5/40 ,  H01S5/4012

Abstract: Provided is a terahertz wave apparatus. The terahertz wave apparatus includes: a wavelength-fixed laser emitting a first laser light having a fixed first wavelength; a wavelength-swept laser emitting a second laser light having a tunable second wavelength; a coupler coupling the first laser light with the second laser light; and a generator converting a mixed light emitted from the coupler into a terahertz wave, wherein a frequency of the terahertz wave is continuously tunable.

Abstract translation: 提供了一种太赫兹波装置。 太赫波装置包括：发射具有固定的第一波长的第一激光的波长固定的激光; 发射具有可调谐的第二波长的第二激光的波长扫描激光; 将所述第一激光与所述第二激光耦合的耦合器; 以及将从耦合器发射的混合光转换成太赫兹波的发生器，其中太赫兹波的频率是连续可调的。

公开(公告)号：US08463087B2

公开(公告)日：2013-06-11

申请号：US13081135

申请日：2011-04-06

Applicant: Bernd Sartorius

Inventor： Bernd Sartorius

IPC: G02B6/12

CPC classification number: H01S5/0623 ,  H01S5/0261 ,  H01S5/0265 ,  H01S5/06258 ,  H01S5/1014 ,  H01S5/1092 ,  H01S5/1228 ,  H01S2302/02

Abstract: A beat signal generating device including first and second monomode lasers for generating radiation of a first and second wavelengths respectively; a first and a second output port; a phase modulating unit for modifying both the phase of radiation generated by both the first laser and second laser, wherein radiation generated by the first laser is transmitted through the second laser and superposed with the radiation generated by the second laser at the second output port, and the radiation generated by the second laser is transmitted through the first laser and superposed with the radiation generated by the first laser at the first output port, such that a first beat signal will be emitted at the first output port and a second beat signal will be emitted at the second output port, wherein the phase between the beat signals can be adjusted by means of the phase modulating unit.

Abstract translation: 一种拍子信号产生装置，包括分别用于产生第一和第二波长辐射的第一和第二单模激光器; 第一和第二输出端口; 相位调制单元，用于修改由第一激光器和第二激光器产生的辐射相位，其中由第一激光器产生的辐射透射通过第二激光器并与由第二激光器在第二输出端口产生的辐射叠加， 并且由第二激光器产生的辐射通过第一激光器传输并与第一输出端口处的由第一激光器产生的辐射重叠，使得第一拍频信号将在第一输出端口处被发射，并且第二拍频信号将 在第二输出端口处发射，其中可以通过相位调制单元调节拍频信号之间的相位。

公开(公告)号：US07447444B2

公开(公告)日：2008-11-04

申请号：US11134275

申请日：2005-05-23

Applicant: Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

Inventor： Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

IPC: H04B10/04

CPC classification number: G02F1/365 ,  G02F1/3513 ,  G02F2203/17 ,  G02F2203/26 ,  H01S5/0623 ,  H04B10/25077 ,  H04B10/291

Abstract: The present invention provides a pulse train generator comprising: a dual-frequency signal light source for generating a dual-frequency signal; a soliton shaper for soliton-shaping output light from the dual-frequency signal light source; and an adiabatic soliton compressor for performing adiabatic soliton compression on output light from the soliton shaper, and also provides a waveform shaper used in this pulse train generator, including a plurality of highly nonlinear optical transmission lines and a plurality of low-nonlinearity optical transmission lines which has a nonlinearity coefficient lower than that of the plurality of highly nonlinear optical transmission lines and which has a second-order dispersion value of which an absolute value is different from that of the plurality of highly nonlinear optical transmission lines. Further, the present invention provides a light source comprising a plurality of continuous light sources of which at least one oscillates in a multimode; a multiplexer for multiplexing output light from the continuous light sources; and a nonlinear phenomenon producer for producing a nonlinear phenomenon on output light from the multiplexer so as to suppress SBS (Stimulated Brillouin Scattering).

Abstract translation: 本发明提供一种脉冲串发生器，包括：用于产生双频信号的双频信号光源; 用于孤子整形的孤子整形器来自双频信号光源的输出光; 以及用于对来自孤子整形器的输出光进行绝热孤子压缩的绝热孤子压缩器，并且还提供在该脉冲串发生器中使用的波形整形器，包括多个高度非线性的光传输线和多个低非线性光传输线 其具有比多个高度非线性光传输线的非线性系数低的非线性系数，并且具有绝对值与多个高度非线性光传输线的绝对值不同的二阶色散值。 此外，本发明提供了一种光源，其包括至少一个以多模振荡的多个连续光源; 多路复用器，用于复用来自连续光源的输出光; 以及用于在来自多路复用器的输出光上产生非线性现象以抑制SBS（受激布里渊散射）的非线性现象产生器。

公开(公告)号：US07012945B2

公开(公告)日：2006-03-14

申请号：US10725822

申请日：2003-12-01

Applicant: Kyung-Hyun Park ,  Young-Ahn Leem ,  Dong-Churl Kim ,  Dae-Su Yee ,  Sung-Bock Kim ,  Yong-Soon Baek

Inventor： Kyung-Hyun Park ,  Young-Ahn Leem ,  Dong-Churl Kim ,  Dae-Su Yee ,  Sung-Bock Kim ,  Yong-Soon Baek

IPC: H01S5/00

CPC classification number: H01S5/227 ,  H01S5/028 ,  H01S5/0623 ,  H01S5/06258 ,  H01S5/0658 ,  H01S5/1215 ,  H01S5/1237 ,  H01S5/2081 ,  H01S5/2226 ,  H01S5/3213 ,  H01S5/32333 ,  H01S2301/173

Abstract: A multi DFB laser diode for generating spontaneous pulses comprises first and second DFB sections each of which has a substrate including a diffraction grating, an active layer formed on the substrate, a clad layer formed on the active layer and including a refraction varying layer, and an electrode formed on the active layer; and a phase tuning section including a substrate, an active layer formed on the substrate, a clad layer formed on the active layer, and an electrode isolated from the electrode of the first and second DFB sections. The refraction varying layer in the active layer of the first DFB section has a refractive index different from that of the refraction varying layer in the active layer of the second DFB section.

Abstract translation: 用于产生自发脉冲的多DFB激光二极管包括第一和第二DFB部分，每个DFB部分具有包括衍射光栅的衬底，在衬底上形成的有源层，形成在有源层上并包括折射变化层的覆层，以及 形成在有源层上的电极; 以及相位调谐部，其包括基板，形成在所述基板上的有源层，形成在所述有源层上的覆盖层，以及与所述第一DFB部和所述第二DFB部的电极隔离的电极。 第一DFB部分的有源层中的折射变化层具有与第二DFB部分的有源层中的折射变化层的折射率不同的折射率。

公开(公告)号：US6122306A

公开(公告)日：2000-09-19

申请号：US930356

申请日：1997-09-30

Applicant: Bernd Sartorius ,  Martin Moehrle ,  Uwe Feiste ,  Juergen Hoerer-Dragendorf

Inventor： Bernd Sartorius ,  Martin Moehrle ,  Uwe Feiste ,  Juergen Hoerer-Dragendorf

IPC: H01S5/00 ,  H01S5/042 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/065 ,  H01S3/08 ,  H01S3/085

CPC classification number: H01S5/0625 ,  H01S5/0623 ,  H01S5/0658

Abstract: In a self-pulsing multi-section laser having two DFB sections, a Fabry-Perot-like resonator formed from two reflectors and a spacer is integrated into the multi-section laser and optically coupled to at least one DFB section. The spacer has a similar layer structure to the adjacent DFB sections (D.sub.1 and D.sub.2) but not DFB grid and takes the form of a control section operable electrically separated from the DFB sections. Selection is unnecessary. The self-pulsing two-section DFB laser of the invention with an integrated control section is suitable for optical beat regeneration in high-rate communication systems.

Abstract translation: PCT PCT / DE96 / 00597 371日期：1997年9月30日 102（e）日期1997年9月30日PCT 1996年3月29日PCT公布。 公开号WO96 / 30976 日期1996年10月3日在具有两个DFB部分的自脉冲多段激光器中，由两个反射器和间隔器形成的法布里 - 珀罗状谐振器被整合到多段激光器中并与至少一个DFB部分 。 间隔物具有与相邻的DFB部分（D1和D2）相似的层结构，但不具有DFB网格，并且采取可操作地与DFB部分电分离的控制部分的形式。 选择是不必要的。 具有集成控制部分的本发明的自脉冲两段DFB激光器适用于高速率通信系统中的光学拍频再生。