公开(公告)号：US08798107B2

公开(公告)日：2014-08-05

申请号：US12624324

申请日：2009-11-23

Applicant: Pascal Deladurantaye ,  Louis Desbiens ,  Vincent Roy ,  Yves Taillon

Inventor： Pascal Deladurantaye ,  Louis Desbiens ,  Vincent Roy ,  Yves Taillon

IPC: H01S3/10

CPC classification number: H01S3/06754 ,  H01S3/005 ,  H01S3/10084 ,  H01S3/2308

Abstract: A method and device are provided for generating bursts of sub-pulses, preferably in the picosecond range. Seed pulses are first generated, and then phase modulated to spread their spectral profile to several time-dependent spectral components. The phase modulated seed pulses are then spectrally filtered to remove spectral components and retain only selected ones, creating gaps in the amplitude profile of the seed pulses which therefore form bursts of sub-pulses. Various parameters such as the modulation amplitude, the modulation frequency, the spectral characteristics of the filters and the overall amplitude of the seed pulses may be controlled to provide a great versatility and adaptability.

Abstract translation: 提供了一种方法和装置，用于产生优选在皮秒范围内的子脉冲脉冲串。 首先产生种子脉冲，然后进行相位调制以将它们的光谱分布扩展到几个时间依赖的光谱分量。 然后对相位调制的种子脉冲进行频谱滤波以去除频谱分量并且仅保留所选择的分量，从而在种子脉冲的振幅分布中产生间隙，从而形成子脉冲的脉冲串。 可以控制各种参数，例如调制幅度，调制频率，滤波器的光谱特性和种子脉冲的总体振幅，以提供很大的通用性和适应性。

公开(公告)号：US08263903B2

公开(公告)日：2012-09-11

申请号：US12782458

申请日：2010-05-18

Applicant: Pascal Deladurantaye ,  Louis Desbiens ,  Yves Taillon ,  Dany Lemieux ,  Brian W. Baird

Inventor： Pascal Deladurantaye ,  Louis Desbiens ,  Yves Taillon ,  Dany Lemieux ,  Brian W. Baird

IPC: B23K26/42 ,  B23K26/06 ,  B23K26/073

CPC classification number: H01S5/06835 ,  H01S3/06758 ,  H01S3/094003 ,  H01S5/0057 ,  H01S5/0428

Abstract: A method for stabilizing an output of a pulsed laser system includes a directly modulated laser diode by mitigating the effect of switching transients on the temporal shape of the outputted pulses. The method includes controlling a pulse shaping signal to define, over time, processing and conditioning periods. During the processing periods, the pulse shaping signal has an amplitude profile tailored to produce the desired temporal shape of the output. Each conditioning period either immediately precedes or follows a processing period. During a given processing period, the amplitude profile of the pulse shaping signal is tailored so that the drive current of the laser diode is lower than its maximum value during the corresponding processing period, and is of the same order of magnitude as the laser threshold current of the laser diode. In this manner, the stability of the output during the corresponding processing period is improved.

Abstract translation: 用于稳定脉冲激光系统的输出的方法包括通过减轻对输出脉冲的时间形状的切换瞬变的影响的直接调制的激光二极管。 该方法包括控制脉冲整形信号以定义时间上的处理和调节周期。 在处理周期期间，脉冲整形信号具有调整的幅度分布，以产生输出的期望时间形状。 每个调理期间紧接在处理期之前或之后。 在给定的处理周期期间，调整脉冲整形信号的幅度分布，使得激光二极管的驱动电流在相应的处理周期内低于其最大值，并且与激光阈值电流具有相同的数量级 的激光二极管。 以这种方式，提高了在相应处理期间输出的稳定性。

公开(公告)号：US08144737B2

公开(公告)日：2012-03-27

申请号：US12498072

申请日：2009-07-06

Applicant: Louis Desbiens

Inventor： Louis Desbiens

IPC: H01S3/30

CPC classification number: H01S3/06791 ,  H01S3/06712 ,  H01S3/09415 ,  H01S3/10046 ,  H01S3/1022 ,  H01S3/1112 ,  H01S3/136

Abstract: A pulsed fiber laser generating light pulses in the picosecond range has an adjustable pulsewidth. The fiber laser includes a figure-of-eight type laser cavity, preferably of polarization-maintaining optical fiber, defining reciprocal and non-reciprocal loops. A gain medium is disposed asymmetrically in the reciprocal loop, at a position therealong favoring coupling of light in the propagation direction of the non-reciprocal loop. A pump source is coupled to the reciprocal loop to inject pump light into the gain medium. The laser cavity is designed so that changing the pump power will directly affect the pulsewidth of the generated light pulses, providing a useful control mechanism of the pulsewidth.

Abstract translation: 产生皮秒范围内的光脉冲的脉冲光纤激光器具有可调的脉冲宽度。 光纤激光器包括八分之一类型的激光腔，优选地具有偏振保持光纤，其定义了相互和不可逆的环路。 增益介质在互逆环路中非对称地布置在有利于在不可逆环路的传播方向上耦合光的位置。 泵浦源耦合到相互回路以将泵浦光注入增益介质。 激光腔被设计成使得改变泵浦功率将直接影响所产生的光脉冲的脉冲宽度，从而提供脉冲宽度的有用的控制机制。

公开(公告)号：US20110280265A1

公开(公告)日：2011-11-17

申请号：US12780556

申请日：2010-05-14

Applicant: Louis Desbiens ,  Francois Duchesne ,  Michel Jacob ,  Bruno Labranche ,  Vincent Roy

Inventor： Louis Desbiens ,  Francois Duchesne ,  Michel Jacob ,  Bruno Labranche ,  Vincent Roy

IPC: H01S3/10 ,  H01S3/00

CPC classification number: H01S5/0428 ,  H01S5/06216 ,  H01S5/06226

Abstract: A driver circuit for a laser diode provides drive signals to the electrodes of the laser diode based on a pulsed input signal. An input receives the pulsed input signal and launches it into an amplification stage which preferably includes dual amplifiers, a buffering stage and a biasing stage. The output of the laser diode is an optical signal that reproduces the pulsed input signal with high fidelity and low amplitude noise. In one embodiment, the input separates the pulsed input signal into two signal components, launched in respective inverting and non-inverting branches which each include successive amplification, buffering and biasing stages.

Abstract translation: 用于激光二极管的驱动电路基于脉冲输入信号向激光二极管的电极提供驱动信号。 输入接收脉冲输入信号并将其发射到放大级，其优选地包括双放大器，缓冲级和偏置级。 激光二极管的输出是以高保真度和低振幅噪声再现脉冲输入信号的光信号。 在一个实施例中，输入将脉冲输入信号分成两个信号分量，在相应的反相和非反相分支中发射，每个分支包括连续的放大，缓冲和偏置级。

公开(公告)号：US07773294B2

公开(公告)日：2010-08-10

申请号：US11891780

申请日：2007-08-13

Applicant: François Brunet ,  Louis Desbiens

Inventor： François Brunet ,  Louis Desbiens

IPC: H04B10/17

CPC classification number: H01S3/06754 ,  H01S3/0057 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/094023 ,  H01S3/1608 ,  H01S3/2316

Abstract: There is provided a parabolic pulse amplifier for amplifying a pulse light signal. The amplifier comprises an ytterbium-doped amplification waveguide pumped using a pump source with a pump central wavelength substantially offset from the absorption transition peak wavelength. The pump wavelength is selected such that the absorption coefficient of pump light and the gain coefficient of the signal are substantially equal in the amplification waveguide such that the amplification gain is distributed substantially uniformly along the amplification waveguide.

Abstract translation: 提供了用于放大脉冲光信号的抛物线脉冲放大器。 该放大器包括使用具有基本上偏离吸收转变峰值波长的泵中心波长的泵浦泵浦泵浦的镱掺杂放大波导。 选择泵浦波长，使得在放大波导中，泵浦光的吸收系数和信号的增益系数基本相等，使得放大增益沿着放大波导基本上均匀分布。

公开(公告)号：US20090046352A1

公开(公告)日：2009-02-19

申请号：US11891780

申请日：2007-08-13

Applicant: Francois Brunet ,  Louis Desbiens

Inventor： Francois Brunet ,  Louis Desbiens

IPC: H01S3/00 ,  H01S3/10

CPC classification number: H01S3/06754 ,  H01S3/0057 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/094023 ,  H01S3/1608 ,  H01S3/2316

Abstract: There is provided a parabolic pulse amplifier for amplifying a pulse light signal. The amplifier comprises an ytterbium-doped amplification waveguide pumped using a pump source with a pump central wavelength substantially offset from the absorption transition peak wavelength. The pump wavelength is selected such that the absorption coefficient of pump light and the gain coefficient of the signal are substantially equal in the amplification waveguide such that the amplification gain is distributed substantially uniformly along the amplification waveguide.

Abstract translation: 提供了用于放大脉冲光信号的抛物线脉冲放大器。 该放大器包括使用具有基本上偏离吸收转变峰值波长的泵中心波长的泵浦泵浦泵浦的镱掺杂放大波导。 选择泵浦波长，使得在放大波导中，泵浦光的吸收系数和信号的增益系数基本相等，使得放大增益沿着放大波导基本上均匀分布。

公开(公告)号：US07876497B2

公开(公告)日：2011-01-25

申请号：US12117852

申请日：2008-05-09

Applicant: Louis Desbiens

Inventor： Louis Desbiens

IPC: H04B10/17 ,  H04B10/12

CPC classification number: H01S3/06754 ,  H01S3/094015 ,  H01S3/094088

Abstract: There is provided a long-band rare-earth-doped optical amplifier and method for amplifying an optical signal. The optical amplifier has a pre-, a mid- and a post-amplification stage. Only the mid-amplification stage is pumped with a pump light source. The other two are pumped using Amplified Spontaneous Emission (ASE) generated in the mid-amplification stage. An optical coupling device is used to couple the three amplification stages together and to split the ASE generated in the mid-amplification stage and available at one end of the mid-amplification stage. One part of the split ASE is used to pump the pre-amplification stage while the other part is used to pump the post-amplification stage.

Abstract translation: 提供了一种用于放大光信号的长带稀土掺杂光放大器和方法。 光放大器具有预放大，中放大和后置放大级。 只有中间放大级泵浦泵浦光源。 另外两个是使用在中期放大阶段产生的放大自发发射（ASE）来泵浦的。 光耦合器件用于将三个放大级耦合在一起，并将在中间放大级产生的ASE分开，并在中间放大级的一端可用。 分离ASE的一部分用于泵浦预放大级，而另一部分用于泵浦后置放大级。

公开(公告)号：US08254015B2

公开(公告)日：2012-08-28

申请号：US12978126

申请日：2010-12-23

Applicant: Yves Taillon ,  Mathieu Drolet ,  David Gay ,  Louis Desbiens ,  Brian W. Baird

Inventor： Yves Taillon ,  Mathieu Drolet ,  David Gay ,  Louis Desbiens ,  Brian W. Baird

IPC: G02F1/01

CPC classification number: B23K26/066

Abstract: Laser systems and methods for providing an output light beam having a target spatial pattern are provided. A light generating module generates an input light beam, whose spectral profile is then tailored by imposing thereon a controllable phase modulation. The obtained spectrally tailored light beam is dispersed, using at least one spatially-dispersive element to provide an output light beam having a spatial profile which is a function of the spectral profile of the spectrally tailored light beam, The phase modulation is selected in view of the spectral profile of the input light beam and of the dispersion characteristics of the at least one spatially-dispersive element so that the spatial pattern of the output light beam matches the target spatial pattern therefor.

Abstract translation: 提供了用于提供具有目标空间图案的输出光束的激光系统和方法。 光产生模块产生输入光束，其光谱轮廓然后通过在其上施加可控相位调制而被调整。 使用至少一个空间色散元件将获得的光谱定制的光束分散，以提供具有作为光谱定制的光束的光谱分布的函数的空间分布的输出光束。相位调制是根据 输入光束的光谱分布和至少一个空间色散元件的色散特性，使得输出光束的空间图案与目标空间图案匹配。

公开(公告)号：US20110170564A1

公开(公告)日：2011-07-14

申请号：US12974509

申请日：2010-12-21

Applicant: Louis DESBIENS ,  Vincent Roy ,  Pascal Deladurantaye ,  Marco Michele Sisto ,  Yves Taillon ,  Brian W. Baird

Inventor： Louis DESBIENS ,  Vincent Roy ,  Pascal Deladurantaye ,  Marco Michele Sisto ,  Yves Taillon ,  Brian W. Baird

IPC: H01S3/30

CPC classification number: H01S3/0085 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/1024 ,  H01S3/1305 ,  H01S3/2308

Abstract: A pulsed fiber laser oscillator and laser systems incorporating such laser oscillators are presented. The laser oscillator first includes a light generating module which generates optical pulses having an initial spectral profile. A spectrum tailoring module tailors the initial spectral profile of the optical pulses by imposing a phase variation on each optical pulse according to an optimized phase varying function. The optimized phase varying function has one of a rectified sinusoidal shape, a parabolic shape and a rectified parabolic shape. Laser systems incorporating such oscillators may be of a MOPA configuration, and may further include a nonlinear crystal for frequency conversion or a bulk solid-state amplifier.

Abstract translation: 提出了一种脉冲光纤激光振荡器和包含这种激光振荡器的激光系统。 激光振荡器首先包括产生具有初始光谱分布的光脉冲的光产生模块。 频谱裁剪模块通过根据优化的相位变化函数对每个光脉冲施加相位变化来调整光脉冲的初始光谱分布。 优化的相变函数具有整流正弦形状，抛物线形状和整流抛物线形状之一。 结合这种振荡器的激光系统可以是MOPA配置，并且还可以包括用于频率转换的非线性晶体或大容量固态放大器。

公开(公告)号：US07974319B2

公开(公告)日：2011-07-05

申请号：US12408215

申请日：2009-03-20

Applicant: Pascal Deladurantaye ,  Louis Desbiens ,  Marco Michele Sisto ,  Mathieu Drolet ,  Vincent Roy ,  Yves Taillon

Inventor： Pascal Deladurantaye ,  Louis Desbiens ,  Marco Michele Sisto ,  Mathieu Drolet ,  Vincent Roy ,  Yves Taillon

IPC: H01S3/30

CPC classification number: H01S3/06754 ,  H01S3/005 ,  H01S3/10084 ,  H01S3/2308

Abstract: High power optical pulses generating methods and laser oscillators are provided. A light generating module generates seed optical pulses having predetermined optical characteristics. A spectrum tailoring module is then used to tailor the spectral profile of the optical pulses. The spectral tailoring module includes a phase modulator which imposes a time-dependent phase variation on the optical pulses. The activation of the phase modulator is synchronized with the passage of the optical pulse therethough, thereby efficiently reducing the RF power necessary to operate the device.

Abstract translation: 提供了大功率光脉冲发生方法和激光振荡器。 光产生模块产生具有预定光学特性的种子光脉冲。 然后使用频谱裁剪模块来定制光脉冲的光谱分布。 光谱定制模块包括相位调制器，其对光脉冲施加时间依赖的相位变化。 相位调制器的激活与光脉冲的通过同步，从而有效地降低了操作器件所需的RF功率。