公开(公告)号：US12095222B2

公开(公告)日：2024-09-17

申请号：US18096185

申请日：2023-01-12

Applicant: IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY

Inventor： Hajo Idriss Mohammed Idriss ,  Mohammed Khalil Mohammed Ali ,  Osamah Abdulrahman Aldaghri ,  Khalid Hassan Ibnaouf Ahmed ,  Moez Abdolfath Ibrahem Mohammed

IPC: H01S3/20 ,  H01S3/213 ,  H01S3/00 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/16

CPC classification number: H01S3/213 ,  H01S3/0092 ,  H01S3/109 ,  H01S3/1121 ,  H01S3/1611 ,  H01S3/1643 ,  H01S2301/02

Abstract: The olive oil-tuned broadband conjugated polymer laser medium includes the conjugated polymer known as poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) or “Poly(FV-co-MEHPV)” at a 90:10 mole ratio. The emission wavelength of the olive oil tuned broadband conjugated polymer laser can be reversibly tuned between 500 nm and 680 nm.

公开(公告)号：US09236708B2

公开(公告)日：2016-01-12

申请号：US14279189

申请日：2014-05-15

Applicant: Coherent, Inc.

Inventor： Ian MacGillivray ,  Andrea Caprara ,  Sergei Govorkov

IPC: H01S3/081 ,  H01S5/065 ,  H01S3/07 ,  H01S3/094 ,  H01S5/14 ,  H01S5/183 ,  H01S5/04 ,  H01S3/11 ,  H01S3/13

CPC classification number: H01S5/0657 ,  H01S3/07 ,  H01S3/0813 ,  H01S3/094026 ,  H01S3/1118 ,  H01S3/1121 ,  H01S3/1306 ,  H01S3/1307 ,  H01S5/041 ,  H01S5/14 ,  H01S5/183

Abstract: A laser includes an optically pumped semiconductor OPS gain-structure. The apparatus has a laser-resonator which includes a mode-locking device for causing the laser to deliver mode-locked pulses. The resonator has a total length selected such that the mode-locked pulses are delivered at a pulse repetition frequency less than 150 MHz. An optical arrangement within the resonator provides that radiation circulating in the resonator makes a plurality of incidences on the OPS gain-structure with a time less than the excited-state lifetime of the gain-structure between successive incidences.

Abstract translation: 激光器包括光泵浦半导体OPS增益结构。 该装置具有激光谐振器，该激光谐振器包括用于使激光器传递锁模脉冲的模式锁定装置。 共振器具有选择的总长度，使得锁模脉冲以小于150MHz的脉冲重复频率传送。 谐振器内的光学布置使得在谐振器中循环的辐射在OPS增益结构上产生多个发生时间，其时间小于连续发生之间的增益结构的激发态寿命。

公开(公告)号：US20150318660A1

公开(公告)日：2015-11-05

申请号：US14338095

申请日：2014-07-22

Applicant: FUJIKURA LTD.

Inventor： Yasuhiro Oba ,  Michihiro Nakai

IPC: H01S3/067 ,  H01S3/30 ,  H01S3/10 ,  H01S3/094 ,  H01S3/0941

CPC classification number: H01S3/0675 ,  H01S3/0078 ,  H01S3/06 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/08013 ,  H01S3/094003 ,  H01S3/094007 ,  H01S3/094042 ,  H01S3/094049 ,  H01S3/094076 ,  H01S3/09415 ,  H01S3/10007 ,  H01S3/10038 ,  H01S3/10069 ,  H01S3/109 ,  H01S3/1121 ,  H01S3/117 ,  H01S3/23 ,  H01S3/302

Abstract: In a case where the period from the input of the output suspension instruction to the next output instruction is shorter than the fixed period of time, the seed laser light source and the pumping light source are in a pre-pumped state during the period from the end of the output state to the start of the next output state. In a case where the period from the input of the output suspension instruction to the next output instruction is longer than the fixed period of time, the seed laser light source and the pumping light source are in the pre-pumped state only for the fixed period of time from the input of the output instruction.

Abstract translation: 在从输出暂停指示输入到下一个输出指令的周期比固定时间段短的情况下，种子激光光源和泵浦光源在从 输出状态的结束到下一个输出状态的开始。 在从输出停止指示输入到下一个输出指令的期间比固定时间长的情况下，种子激光光源和泵浦光源仅在固定期间处于预抽状态 的时间从输入指令的输入。

公开(公告)号：US20140321484A1

公开(公告)日：2014-10-30

申请号：US14216353

申请日：2014-03-17

Applicant: Rafael Armando Sierra ,  John Robertson ,  Daniel Hohm ,  Christian Hoffman ,  Mirko Georgiev Mirkov

Inventor： Rafael Armando Sierra ,  John Robertson ,  Daniel Hohm ,  Christian Hoffman ,  Mirko Georgiev Mirkov

IPC: H01S3/08 ,  A61N5/06 ,  H01S3/102

CPC classification number: A61B18/203 ,  A61B2018/0047 ,  A61N5/0616 ,  A61N2005/067 ,  H01S3/0092 ,  H01S3/0627 ,  H01S3/08018 ,  H01S3/08054 ,  H01S3/093 ,  H01S3/094038 ,  H01S3/094076 ,  H01S3/094084 ,  H01S3/1024 ,  H01S3/107 ,  H01S3/1106 ,  H01S3/1109 ,  H01S3/1121 ,  H01S3/1611 ,  H01S3/1623 ,  H01S3/1633 ,  H01S3/1643 ,  H01S3/1673

Abstract: Methods, systems and apparatus are disclosed for delivery of pulsed treatment radiation by employing a pump radiation source generating picosecond pulses at a first wavelength, and a frequency-shifting resonator having a lasing medium and resonant cavity configured to receive the picosecond pulses from the pump source at the first wavelength and to emit radiation at a second wavelength in response thereto, wherein the resonant cavity of the frequency-shifting resonator has a round trip time shorter than the duration of the picosecond pulses generated by the pump radiation source. Methods, systems and apparatus are also disclosed for providing beam uniformity and a sub-harmonic resonator.

Abstract translation: 公开了用于通过采用产生第一波长的皮秒脉冲的泵浦辐射源来递送脉冲处理辐射的方法，系统和装置，以及具有激光介质和谐振腔的频移谐振器，其配置成从泵浦源接收皮秒脉冲 并且响应于第二波长发射第二波长的辐射，其中所述频移谐振器的谐振腔具有比由泵浦辐射源产生的皮秒脉冲的持续时间短的往返时间。 还公开了用于提供光束均匀性和次谐波谐振器的方法，系统和装置。

公开(公告)号：US20110134433A1

公开(公告)日：2011-06-09

申请号：US12942731

申请日：2010-11-09

Applicant: Tomohiro Yamada

Inventor： Tomohiro Yamada

IPC: G01B9/02 ,  H01S3/105 ,  H01S5/00 ,  H01S3/067 ,  H01S3/06

CPC classification number: H01S5/146 ,  A61B5/0062 ,  A61B5/0066 ,  A61B5/0073 ,  A61B5/0088 ,  A61B2562/0242 ,  G01N21/4795 ,  G01N2021/1787 ,  H01S3/1109 ,  H01S3/1121 ,  H01S3/1312 ,  H01S3/136 ,  H01S5/4025 ,  H01S2301/04

Abstract: A light source apparatus includes an optical resonator provided with a plurality of gain media that amplify light and an optical waveguide and a control unit configured to individually control amplification factors of the plurality of gain media, in which the plurality of gain media have mutually different maximum gain wavelengths whose amplification regions are mutually partially overlapped, and a wavelength at which a total gain by the plurality of gain media becomes a maximum value is set to be variable on the basis of the control on the amplification factors.

Abstract translation: 光源装置包括：光谐振器，设置有放大光的多个增益介质和光波导;以及控制单元，被配置为单独控制多个增益介质的放大因子，其中多个增益介质具有相互不同的最大值 放大区域相互部分重叠的增益波长，多个增益介质的总增益变为最大值的波长根据对放大系数的控制而变化。

公开(公告)号：US07508851B2

公开(公告)日：2009-03-24

申请号：US11748172

申请日：2007-05-14

Applicant: Dai Yoshitomi ,  Yohei Kobayashi ,  Kenji Torizuka

Inventor： Dai Yoshitomi ,  Yohei Kobayashi ,  Kenji Torizuka

IPC: H01S3/10

CPC classification number: H01S3/10092 ,  H01S3/06791 ,  H01S3/1112 ,  H01S3/1121 ,  H01S3/1394

Abstract: A clock transfer device is designed to perform long-distance transfer of a reference clock, which is generated based on a high-precision frequency standard, toward a remote place. The clock transfer device includes a first mode-locked laser for generating a first optical pulse train having a first repetition frequency and a first wavelength, and a second mode-locked laser for generating a second optical pulse train having a second repetition frequency and a second wavelength. The first optical pulse train is introduced into a resonator of the second mode-locked laser via a wavelength multiplexing coupler so that the second repetition frequency is passively synchronized with the first repetition frequency; then, the second optical pulse train is transmitted via a single mode fiber.

Abstract translation: 时钟传送装置被设计成对远程地方执行基于高精度频率标准产生的参考时钟的长距离传送。 时钟传送装置包括用于产生具有第一重复频率和第一波长的第一光脉冲串的第一锁模激光器和用于产生具有第二重复频率的第二光脉冲序列的第二锁模激光器， 波长。 第一光脉冲串经由波长多路复用耦合器被引入到第二锁模激光器的谐振器中，使得第二重复频率与第一重复频率被动地同步; 那么，第二光脉冲串通过单模光纤传输。

公开(公告)号：US07492795B1

公开(公告)日：2009-02-17

申请号：US11029974

申请日：2005-01-05

Applicant: Peter J Delfyett ,  Sangyoun Gee ,  Myoung-Taek Choi

Inventor： Peter J Delfyett ,  Sangyoun Gee ,  Myoung-Taek Choi

IPC: H01S3/13

CPC classification number: H01S3/1109 ,  H01S3/06791 ,  H01S3/08036 ,  H01S3/107 ,  H01S3/1121 ,  H01S3/1305 ,  H01S3/136

Abstract: Systems, devices and methods of generating both a precision electrical timing signal as well as a precision optical timing signal. A novel, modified opto-electronic loop oscillator is used to drive a harmonic mode-locked laser. A novel opto-electronic loop has a larger “Q” factor by increasing the electrical loop oscillating frequency ω0 by using a beat note created by the selection of two optical longitudinal modes from the mode-locked laser. The beat note is detected and divided down to drive a modulator that mode-locks the laser. The frequency division stage also reduces the noise.

Abstract translation: 产生精密电定时信号以及精密光学定时信号的系统，装置和方法。 一种新颖的改进型光电环形振荡器用于驱动谐波锁模激光器。 通过使用通过从锁模激光器的两个光学纵向模式的选择产生的拍音来增加电环振荡频率ω0，新颖的光电循环具有更大的“Q”因子。 拍摄音符被检测并分频以驱动模式锁定激光器的调制器。 分频级还可以降低噪音。

公开(公告)号：US06957019B2

公开(公告)日：2005-10-18

申请号：US10147986

申请日：2002-05-20

Applicant: Kamal Kant Gupta ,  Noriaki Onodera

Inventor： Kamal Kant Gupta ,  Noriaki Onodera

IPC: G02F1/035 ,  G02F1/01 ,  G02F1/225 ,  H01S3/06 ,  H01S3/067 ,  H01S3/098 ,  H01S3/107 ,  H01J14/08 ,  H04B10/04

CPC classification number: G02F1/0121 ,  G02F1/225 ,  H01S3/06791 ,  H01S3/08022 ,  H01S3/1109 ,  H01S3/1121

Abstract: A stabilized optical pulse generator using RHML-FRL is provided. The stabilized optical pulse generator comprises an optical fiber ring composed of optical fibers, an optical amplifier and a modulator for optical modulation, an electric signal generator generating high frequency signals and an optical pulse stabilizer. The device generates an optical pulse train of repeating frequency of fm, when applying electric signals of frequency of fm to the modulator. Wherein, for a resonance frequency of the optical fibers of fc, the modulating frequency applying to the modulator is detuned from the electric signal of the frequency of fm by frequency of the resonance frequency fc divided by integer of p. Optical pulse trains of repeating frequency of p times of fm+fc/p or fm−fc/p are generated. The optical pulse trains are stabilized by suppressing carrier components and a part of high frequency components as well as suppressing the random oscillations of the cavity resonance modes and intermediate longitudinal modes with respect to the main longitudinal modes which are frequency spaced that is equal to the repetition frequency of the generated optical pulse trains.

Abstract translation: 提供了使用RHML-FRL的稳定型光脉冲发生器。 稳定的光脉冲发生器包括由光纤组成的光纤环，光放大器和用于光调制的调制器，产生高频信号的电信号发生器和光脉冲稳定器。 当向调制器施加f m频率的电信号时，该装置产生重复频率为f m m的光脉冲串。 其中，对于f C的光纤的谐振频率，施加到调制器的调制频率与f m的频率的电信号失谐， 谐振频率f C c除以p的整数。 f m的重复频率的光脉冲串，f / f / f或c / > / p被生成。 通过抑制载波分量和一部分高频分量来稳定光脉冲串，并且抑制腔谐振模式和中间纵模的随机振荡相对于频率间隔等于重复的主纵模 生成的光脉冲列的频率。

公开(公告)号：US6101021A

公开(公告)日：2000-08-08

申请号：US349225

申请日：1999-07-08

Applicant: Yoshihiro Kumagai ,  Akio Ichikawa ,  Rikihiro Iida ,  Masataka Nakazawa ,  Eiji Yoshida

Inventor： Yoshihiro Kumagai ,  Akio Ichikawa ,  Rikihiro Iida ,  Masataka Nakazawa ,  Eiji Yoshida

IPC: G02F1/01 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/083 ,  H01S3/098 ,  H01S3/10 ,  G02F1/00

CPC classification number: H01S3/06791 ,  H01S3/1109 ,  H04B10/503 ,  H04B10/508 ,  H04B10/564 ,  G02F2203/26 ,  H01S3/06754 ,  H01S3/10038 ,  H01S3/1121 ,  H01S3/136

Abstract: According to the present invention, damage to a photo-detector disposed in clock signal extractor by means of an optical pulse having an optical power exceeding a rated value is prevented. A ring resonator generates a repetitive, high-frequency optical pulse. Optical branching circuit branches a portion of the optical pulse circulating through ring resonator, while optical branching circuit further branches a portion thereof to protective device. Pumping source generates an excitation light for exciting a rare-earth doped optical fiber. Optical multiplexer couples the optical pulse branched by optical branching circuit, and the excitation light. Upon excitation by means of the excitation light, rare-earth doped optical fiber amplifies and emits the incoming optical pulse. The optical power of the excitation light is adjusted such that the output of rare-earth doped optical fiber reaches a saturation power. Optical switch blocks the incoming optical pulse during the time period when pumping source is not emitting an excitation light, and during a fixed time period following the emission of the excitation light. In this manner, the entry of an excessively large optical pulse exceeding the saturation power into photo-detector at the time of starting up the power source is prevented. Optical attenuator attenuates the optical power of the optical pulse emitted from optical switch to an optical power which the photo-detector is capable of photo-detecting. Photo-detector converts the optical pulse emitted from protective device into an electronic signal; narrow band filter extracts a clock signal from the output of photo-detector; and electric amplifier amplifies the output of narrow band filter, and outputs a clock signal. Phase shifter adjusts the phase of this clock signal; electric amplifier amplifies the output of phase shifter, and outputs a clock signal to optical modulator. Optical modulator modulates the intensity of the light circulating through the ring resonator based on the clock signal, and generates an optical pulse.

公开(公告)号：US5212711A

公开(公告)日：1993-05-18

申请号：US835813

申请日：1992-02-18

Applicant: George T. Harvey ,  Linn F. Mollenauer

Inventor： George T. Harvey ,  Linn F. Mollenauer

IPC: H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/083 ,  H01S3/098 ,  H01S3/106 ,  H01S3/139

CPC classification number: H01S3/06791 ,  H01S3/082 ,  H01S3/1396 ,  H01S3/1062 ,  H01S3/1109 ,  H01S3/1121 ,  H01S3/1305

Abstract: The invention is an improvement of a harmonically mode-locked ring laser of the type comprising means (12) defining an optical path, an active laser medium (15) for emitting coherent light to be transmitted along the optical path, and means (18) included in the optical path for causing the light to propagate along the path as a train of pulses having a period which is substantially equal to the transit time of light pulses in the optical path divided by an integer. The improvement is characterized in that the optical path includes a Fabry-Perot optical resonator (24) having a free spectral range substantially equal to the pulse repetition rate of the optical pulses in the ring laser. Under this condition, the Fabry-Perot resonator tends to equalize the energy, shape and width of the individual pulses.