公开(公告)号：US20030117697A1

公开(公告)日：2003-06-26

申请号：US10284614

申请日：2002-10-31

Inventor： Peter Krummrich

IPC: H01S003/00

CPC classification number: H01S3/302 ,  H01S3/06754 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/10007 ,  H01S3/1608 ,  H01S2301/02 ,  H01S2301/04

Abstract: A pumping source is provided for the Raman amplification of an optical wavelength division multiplex signal, wherein the pumping source has a number of pumping lasers with, in each case, different pumping wavelengths. Modules for the angle and/or amplitude modulation of pumping signals of the pumping lasers are connected to the pumping lasers, such that by appropriate adaptation of the modulation of the pumping signals mixing products from four-wave mixing between the pumping signals are suppressed.

Abstract translation: 提供了用于光波分复用信号的拉曼放大的泵浦源，其中泵浦源具有多个泵浦激光器，在每种情况下具有不同的泵浦波长。 用于泵浦激光器的泵浦信号的角度和/或幅度调制的模块连接到泵浦激光器，使得通过适当地调整泵浦信号的调制，抑制了泵浦信号之间四波混频的产物。

公开(公告)号：US20030095745A1

公开(公告)日：2003-05-22

申请号：US09990206

申请日：2001-11-21

Inventor： Narayan L. Gehlot

IPC: G02B006/26 ,  H01S003/30

CPC classification number: H04B10/2916 ,  H01S3/06754 ,  H01S3/094076 ,  H01S3/10007 ,  H01S3/302

Abstract: A pump source for a fiber Raman amplifier used in a WDM optical communication system is formed to generate an RF-modulated pump signal (as opposed to the prior art CW signals). The modulation frequency and index of the RF-modulated pump signal are controlled to impart a sufficient degree of nullrandomnessnull to the presence of the pump signal at each wavelength, thus minimizing cross talk between the signals and improving the transfer of power from the pump signal to the plurality of optical input signals.

Abstract translation: 形成用于WDM光通信系统中的用于光纤拉曼放大器的泵浦源，以产生RF调制的泵浦信号（与现有技术的CW信号相反）。 控制RF调制的泵浦信号的调制频率和指数，以赋予在每个波长处的泵浦信号的存在足够的“随机性”，从而最小化信号之间的串扰，并改善来自泵的功率传递 信号到多个光输入信号。

公开(公告)号：US06188704B1

公开(公告)日：2001-02-13

申请号：US09013344

申请日：1998-01-26

Applicant: Young Key Kwon ,  Jeffrey Michael Buske ,  Sergey Sobolev ,  Aram Semerjyan

Inventor： Young Key Kwon ,  Jeffrey Michael Buske ,  Sergey Sobolev ,  Aram Semerjyan

IPC: H01S311

CPC classification number: H01S3/117 ,  H01S3/0912 ,  H01S3/094076 ,  H01S3/09415 ,  H01S3/1022 ,  H01S3/1673

Abstract: This invention relates to a new diode pumped solid state laser which has a miniature Q-switching device in the cavity. Nd:YAG, Nd:YLF or Nd:YVO4 are useful solid state laser materials for Q-switching. A compact thermo-electric (TE)cooled diode laser unit is used as a pump source, and high-speed switching of the drive current driver is provided for the precise pump energy control. By using the variable high-speed switching pump source, the energy of each Q-switched output pulse from the laser can be controlled precisely and the usual “giant pulse” from the Q-switch can be eliminated. Also, the pulse energy can be controlled precisely independent of the repetition rate or switching speed of the Q-switch without using other feedback components. The Q-switch is synchronized to open at the end of each diode pump pulse.

Abstract translation: 本发明涉及一种新的二极管泵浦固态激光器，其在空腔中具有微型Q开关器件。 Nd：YAG，Nd：YLF或Nd：YVO4是用于Q开关的固态激光材料。 使用紧凑型热电（TE）冷却二极管激光单元作为泵浦源，提供驱动电流驱动器的高速切换用于精确的泵能量控制。 通过使用可变高速开关泵浦源，可以精确地控制来自激光器的每个Q开关输出脉冲的能量，并且可以消除来自Q开关的通常的“巨脉冲”。 此外，脉冲能量可以与Q开关的重复频率或开关速度无关，而不使用其他反馈分量。 Q开关在每个二极管泵浦脉冲结束时同步打开。

公开(公告)号：US6084896A

公开(公告)日：2000-07-04

申请号：US782591

申请日：1997-01-13

Applicant: Fumio Ohtomo ,  Hiroshi Koizumi ,  Masayuki Momiuchi ,  Masahiro Ohishi ,  Yoshiaki Goto

Inventor： Fumio Ohtomo ,  Hiroshi Koizumi ,  Masayuki Momiuchi ,  Masahiro Ohishi ,  Yoshiaki Goto

IPC: H01S3/102 ,  H01S5/022 ,  H01S5/062 ,  H01S3/00

CPC classification number: H01S5/06216 ,  H01S3/1022 ,  H01S3/005 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10046

Abstract: The present invention relates to a laser light-source apparatus and a method of producing a laser beam, and particularly to a laser light-source apparatus capable of generating intermittent pulse light having a predetermined flickering time and emphasizing the brightness of its peak by a Bartley effect. A timing circuit forms a timing signal so as to allow an excitation type laser light source to produce the intermittent pulse light having the predetermined flickering time. A pumping laser pumps the excitation type laser light source based on the signal outputted from the timing circuit. The intermittent pulse light is flickering slower than a flicker value of a normal person in cycle. The time required to put out the intermittent pulse light is set to a time or so required to restore the sensitivity of each of human eyes to the maximum sensitivity after the human eyes have felt brightness since light has been launched into the human eyes.

Abstract translation: 激光光源装置及其制造方法技术领域本发明涉及激光光源装置和激光束的制造方法，特别涉及能够产生具有规定的闪烁时间的间歇脉冲光并且通过巴特利强调其峰值的亮度的激光光源装置 影响。 定时电路形成定时信号，以允许激励型激光光源产生具有预定闪烁时间的间歇脉冲光。 泵浦激光器基于从定时电路输出的信号泵浦激励型激光光源。 间歇脉冲灯的闪烁比正常人的闪烁值慢。 放出间歇脉冲光所需的时间被设定为将光照射到人眼中之后人眼感觉到亮度后将人眼的灵敏度恢复到最大灵敏度所需的时间。

公开(公告)号：US5930030A

公开(公告)日：1999-07-27

申请号：US126119

申请日：1998-07-30

Applicant: Donals R. Scifres

Inventor： Donals R. Scifres

IPC: H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/131 ,  H01S3/23 ,  H01S3/00

CPC classification number: H01S3/094003 ,  H01S3/06754 ,  H01S3/06758 ,  H01S2301/02 ,  H01S3/06729 ,  H01S3/06787 ,  H01S3/094026 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/1301

Abstract: An apparatus for pumping an optical gain medium, such as a fiber gain medium, comprises a pump source having a plurality of different spatially separate or multiple wavelengths or wavelength bands which are all coupled into the fiber gain medium and provide at least one or more wavelengths to fall within the absorption band of fiber gain medium producing gain despite wavelength shifts in the pump source multiple wavelengths due to changes in the operating temperature of the pump source. At least one or more of the pump wavelengths will overlap the gain spectrum of the fiber gain medium sufficiently to continually provide high input power for pumping of the fiber gain medium.

Abstract translation: 用于泵浦光增益介质（例如光纤增益介质）的装置包括具有多个不同的空间分离或多个波长或波长带的泵浦源，所述多个波长或波长带全部耦合到光纤增益介质中并提供至少一个或多个波长 在光源增益介质的吸收带内产生增益，尽管由于泵浦源的工作温度的变化，泵浦源中的波长偏移多个波长。 泵浦波长中的至少一个或多个将与光纤增益介质的增益光谱重叠，足以持续提供用于泵浦光纤增益介质的高输入功率。

公开(公告)号：US5018152A

公开(公告)日：1991-05-21

申请号：US404316

申请日：1989-09-07

Applicant: Mark A. Linne ,  Robert W. Johnson ,  Richard G. Thompson

Inventor： Mark A. Linne ,  Robert W. Johnson ,  Richard G. Thompson

IPC: H01S3/11 ,  H01S3/131

CPC classification number: H01S3/11 ,  H01S3/1312 ,  H01S3/0912 ,  H01S3/094076 ,  H01S3/09415

Abstract: A switched cavity laser system which includes a resonant cavity, a gain medium within the resonant cavity, a cavity switch and an output coupler. A controllable pump energy source delivers pump energy to the gain medium in response to an energy control signal. A detector is coupled with the gain medium and generates a detector signal in response to the amount of population inversion exhibited by the gain medium. A control circuit is coupled to the detector and controllable pump energy source for generating the energy control signal in response to the detector signal. As the switching rate of the Q-switch is varied, the energy control signal varies to ensure a constant level of population inversion between each pulse. In this matter, a prespecified pulse energy is achieved for each pulse independent of the switching rate of the Q-switch.

Abstract translation: 一种开关腔激光器系统，其包括谐振腔，谐振腔内的增益介质，腔开关和输出耦合器。 响应于能量控制信号，可控泵浦能量源将泵浦能量传递到增益介质。 检测器与增益介质耦合，并响应于增益介质显示的总体反转量产生检测器信号。 控制电路耦合到检测器和可控的泵浦能量源，以响应于检测器信号产生能量控制信号。 随着Q开关的切换速率的变化，能量控制信号变化，以确保每个脉冲之间恒定的总体反转水平。 在这种情况下，独立于Q开关的开关速率，为每个脉冲实现预定的脉冲能量。

公开(公告)号：US20240079841A1

公开(公告)日：2024-03-07

申请号：US18242456

申请日：2023-09-05

Applicant: Innovusion, Inc.

Inventor： Yimin Li

IPC: H01S3/091 ,  G01S7/481 ,  G01S7/484 ,  G01S17/931 ,  H01S3/094

CPC classification number: H01S3/0912 ,  G01S7/4814 ,  G01S7/4818 ,  G01S7/484 ,  G01S17/931 ,  H01S3/094076 ,  H01S3/0941

Abstract: A light detection and ranging (LiDAR) system in which multiple pump lasers are operated in polyphase fashion at a single pumping stage is disclosed. In some embodiments, the multiple pump lasers are operated by controllers that generate current pulses through the multiple pump lasers. The current pulses powering at least two of the pumping lasers have different phases. In some embodiments, the phase differences are such that there is no timing overlap in the current pulses through the pump lasers. In some embodiments, the phase difference between successive current pulses is greater than the pulse width such that the sum of the duty cycles of all the current pulses is less than one. In some embodiments, junction temperatures of pump lasers are monitored and temperature information from the monitoring is used to dynamically select which pump laser will be utilized at a given time. Further details of these and other embodiments are disclosed herein.

公开(公告)号：US20240039233A1

公开(公告)日：2024-02-01

申请号：US18021889

申请日：2020-08-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroto KAWAKAMI ,  Shoichiro KUWAHARA ,  Yoshiaki KISAKA

IPC: H01S3/094 ,  H01S3/067 ,  G02B27/28 ,  H01S3/30

CPC classification number: H01S3/094011 ,  H01S3/094076 ,  H01S3/06754 ,  H01S3/094053 ,  G02B27/283 ,  H01S3/302

Abstract: A pump light generation unit of an optical amplifier pumping device outputs pump light with a single wavelength or a plurality of wavelengths from a plurality of output ports. A pump light multiplexing unit polarization-multiplexes or wavelength-multiplexes the plurality of pieces of pump light which has been output from the pump light generation unit. A polarization scrambler collectively polarization-scrambles the polarization-multiplexed or wavelength-multiplexed pump light which has been output from the pump light multiplexing unit and outputs the polarization-scrambled pump light to an optical waveguide for pump light. The optical waveguide for pump light inputs the pump light which has been polarization-multiplexed or wavelength-multiplexed by the pump light multiplexing unit to the pump light superimposition unit. A pump light superimposition unit multiplexes the polarization-multiplexed or wavelength-multiplexed pump light and signal light. A pump light output port superimposes the pump light on the signal light by outputting the pump light from the pump light superimposition unit to the gain medium so that the pump light propagates in the same direction as the signal light.

公开(公告)号：US20240036433A1

公开(公告)日：2024-02-01

申请号：US17875224

申请日：2022-07-27

Applicant: MILC, LLC

Inventor： Valery Temyanko ,  Leonid Kotov

IPC: G02F1/35 ,  H01S3/094 ,  H01S3/16 ,  H01S3/083 ,  H01S3/136 ,  H01S3/067 ,  G02F1/355

CPC classification number: G02F1/3534 ,  H01S3/094076 ,  H01S3/1643 ,  H01S3/083 ,  H01S3/136 ,  H01S3/1623 ,  H01S3/094038 ,  H01S3/06716 ,  H01S3/1618 ,  G02F1/3558 ,  G02F1/3551

Abstract: Systems, devices, and methods of the present invention provide for the effective generation of high-speed modulated light using difference frequency generation (DFG). Modulated light in the mid-IR region may be generated in an optical resonator with a DFG device and having a Q factor greater than about 50 for a signal light with a wavelength in the range between 1350 and 1550 nm. A DFG device may generate the modulated mid-IR light by collinear passage of the intracavity signal light and a modulated pump light having a wavelength in the range between 1000 and 1100 nm through the DFG device. The modulated pump could be used for pumping both a signal lasing media and a DFG device at the same time.

公开(公告)号：US20230318253A1

公开(公告)日：2023-10-05

申请号：US18177410

申请日：2023-03-02

Applicant: IMRA America, Inc.

Inventor： Martin E. Fermann ,  Antoine Jean Gilbert Rolland ,  Peng Li

IPC: H01S3/30 ,  H01S3/13 ,  H01S3/0941 ,  H01S3/094 ,  H01S3/10 ,  H01S3/00 ,  H01S3/08

CPC classification number: H01S3/302 ,  H01S3/0085 ,  H01S3/08013 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10092 ,  H01S3/1305

Abstract: Example ultra narrow linewidth Brillouin lasers are disclosed that are pumped by pump lasers that are controlled via optimal control schemes in order to stabilize the Brillouin laser output frequency and minimize the Brillouin output linewidth. The control schemes are based on feedback loops to match the pump laser frequency to the optimum Stokes shift on the one hand and to line-narrow the pump laser linewidth on the other hand via comparing the linewidth of the pump laser with the linewidth of the Brillouin laser. The feedback loops in the control schemes can be partially or fully replaced with feedforward control schemes, allowing for larger bandwidth control. Provision for simultaneous oscillation of the Brillouin lasers on two polarization modes allows for further line-narrowing of the Brillouin output. The ultra-narrow linewidth Brillouin lasers can be advantageously implemented as pumps for microresonator based frequency combs, and can also be integrated to the chip scale and be constructed with minimal vibration sensitivity. The ultra-narrow linewidth Brillouin lasers can be widely tuned and a frequency readout can be provided via the use of a frequency comb. When phase locking a frequency comb to the Brillouin laser, ultra-stable microwave generation can be facilitated.