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公开(公告)号：US10014647B2
公开(公告)日：2018-07-03
申请号：US12935084
申请日：2009-03-27
IPC分类号： H01S3/067
CPC分类号： H01S3/06745 , H01S3/06737
摘要： The invention relates a power fiber laser system including at least one single-mode fiber laser, emitting at a signal wavelength, the fiber including at least one outer cladding and a core, in which the core of the fiber has a radially graded index. The fiber includes, at least over a part of its length, a geometrical section having a graded fiber-core radius that decreases between an input end of the section and an output end of the section, the core radius and the index variation between the cladding and the fiber at the input end being such that the normalized frequency at the signal wavelength is less than the normalized cutoff frequency at which the fiber becomes unimodal.
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公开(公告)号：US20090116031A1
公开(公告)日：2009-05-07
申请号：US12097367
申请日：2006-12-07
申请人： Sylvain Schwartz , Gilles Feugnet , Jean-Paul Pocholle , Augustin Mignot , Bastien Steinhausser
发明人： Sylvain Schwartz , Gilles Feugnet , Jean-Paul Pocholle , Augustin Mignot , Bastien Steinhausser
CPC分类号： G01C19/66
摘要： The field of the invention is that of solid-state laser gyros used in inertial control units. However, there are certain technical difficulties in producing laser gyros of this type that are due partly to the fact that the counterpropagating waves interfere with each other in the amplifying medium. A laser gyro according to the invention comprises at least one solid-state amplifying medium and an optical ring cavity comprising first optical means for imposing a first linear polarization state common to the two counterpropagating optical waves at the entrance and exit of the zone containing the amplifying medium and second optical means for imposing, within the amplifying medium, a second linear polarization state on the first optical wave and a third linear polarization state on the second optical wave, these polarization states being perpendicular. Thus, all the drawbacks associated with interference are eliminated.
摘要翻译： 本发明的领域是用于惯性控制单元的固体激光陀螺仪。 然而，在制造这种类型的激光陀螺仪方面存在某些技术上的困难，部分原因是反向传播波在放大介质中彼此干扰。 根据本发明的激光陀螺仪包括至少一个固态放大介质和光环腔，其包括第一光学装置，用于在包含放大器的区域的入口和出口处施加与两个反向传播光波共同的第一线性极化状态 中等和第二光学装置，用于在放大介质内施加第一光波上的第二线性偏振状态和第二光波上的第三线偏振状态，这些偏振状态是垂直的。 因此，消除了与干扰相关联的所有缺陷。
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公开(公告)号：US07474406B2
公开(公告)日：2009-01-06
申请号：US10582629
申请日：2004-11-23
IPC分类号： G01C19/64
摘要： The field of the invention is that of solid-state laser gyros. One of the major inherent problems in this technology is that the optical emission of this type of laser is by nature highly unstable in terms of power. To reduce this instability, the invention proposes to introduce, into the cavity, optical gains controlled by the installation of an optical assembly comprising an anisotropic lasing medium, a first optical element and a second optical element exhibiting a nonreciprocal effect, each acting on the polarization of the counterpropagating optical modes, at least one of these two effects being variable, thus making it possible to introduce controlled optical gains that depend on the propagation direction of the counterpropagating optical modes. Several devices are described and employ either fixed effects of the element that are combined with variable nonreciprocal effects, or the reverse. These devices apply in particular to monolithic-cavity lasers.
摘要翻译： 本发明的领域是固体激光陀螺仪的领域。 该技术的主要固有问题之一是这种类型的激光器的光发射本质上在功率方面非常不稳定。 为了减少这种不稳定性，本发明提出通过安装包括各向异性激光介质，第一光学元件和第二光学元件的光学组件控制的光学增益，所述光学组件具有非相互作用，各自作用于极化 的相反传播光模式中，这两个效果中的至少一个效果是可变的，从而使得可以引入取决于反向传播光学模式的传播方向的受控光学增益。 描述了几个装置，并且采用与可变非互逆效应组合的元件的固定效应，或者相反。 这些器件特别适用于单片腔激光器。
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4.发明申请Amplifying Medium Comprising a Liquid Medium Based on Halogenated Ligands and Lanthanides 审中-公开基于卤化配体和镧系元素的液体培养基的扩增培养基公开(公告)号：US20080291530A1
公开(公告)日：2008-11-27
申请号：US12097705
申请日：2006-12-11
申请人： Laurent Divay , Jean-Paul Pocholle
发明人： Laurent Divay , Jean-Paul Pocholle
IPC分类号： H01S3/207
CPC分类号： H01S3/207 , C07F9/091 , C07F9/12 , C07F9/5325 , C07F9/5345
摘要： The invention relates to an optical amplifying medium comprising a liquid medium, having an organic ligand corresponding to the following chemical formula: the groups R1, R2 and R3 comprising halogenated chains and a rare earth ion. The advantage of using a liquid medium lies in the possibility of more easily discharging the heat within the amplifying medium. The present solution provides a formulation that furthermore makes it possible to have entities that are non-toxic contrary to those proposed in the prior art.
摘要翻译： 本发明涉及包含液体介质的光学放大介质，其具有对应于以下化学式的有机配体：包含卤化链和稀土离子的基团R1，R2和R3。 使用液体介质的优点在于可以更容易地在放大介质内排放热量。 本解决方案提供了一种制剂，其进一步使得可能具有与现有技术中提出的那些相反的无毒性的实体。
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公开(公告)号：US20070110435A1
公开(公告)日：2007-05-17
申请号：US10582713
申请日：2004-12-09
CPC分类号： B82Y20/00 , G01S7/481 , G01S17/107 , G01S17/89 , G02F1/0126 , G02F1/01716
摘要： The invention relates to a laser active optronic system with improved detectivity, especially an eye-safe optronic system. The system comprises a channel for the emission by an emission source of a laser beam illuminating a target and a channel for receiving the wave backscattered by the target. An optical switching device is positioned in the receive channel, said optical switching device receiving said backscattered wave and comprising an optical gain medium and pumping means for pumping said gain medium, said gain medium being absorbent at the wavelength of the laser and becoming substantially transparent when it is pumped, in such a way as to allow the switching device to be actuated in the on mode or off mode respectively. It further includes a control unit for controlling the pumping means, allowing the switching device to be actuated in the on mode in at least one temporal window of predetermined duration, triggered at a predetermined instant after the start of emission of the illuminating laser beam.
摘要翻译： 本发明涉及具有改进的检测性的激光有源光电系统，特别是眼睛安全的光电系统。 该系统包括用于通过照射目标的激光束的发射源发射的通道和用于接收由目标反向散射的波的通道。 光学开关装置位于接收通道中，所述光学开关装置接收所述背向散射波并且包括光学增益介质和用于泵浦所述增益介质的泵送装置，所述增益介质在激光器的波长处是吸收剂并变得基本上是透明的 它被泵送，以允许开关装置分别在接通模式或关闭模式下被致动。 它还包括用于控制泵送装置的控制单元，允许开关装置在预定持续时间的至少一个时间窗口中以开启模式被致动，在照明激光束的发射开始之后的预定时刻被触发。
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公开(公告)号：US20060176927A1
公开(公告)日：2006-08-10
申请号：US10526610
申请日：2005-03-16
CPC分类号： G01C19/66
摘要： The invention concerns solid-state gyrolasers used to measure rotation speeds or relative angular positions. This type of equipment is used, in particular, in aeronautical applications. The purpose of the invention is to complete the optic devices required to control the instability of lasers, using specific optic devices that eliminate the blind region. In this way, a “fully optic” solid-state laser is obtained, without moving parts, stable, and without blind regions. These devices comprise in particular reciprocal and nonreciprocal optical rotators, arranged so that two counter-propagating optical modes travel in the cavity at sufficiently different frequencies to avoid mode locking.
摘要翻译： 本发明涉及用于测量转速或相对角度位置的固态陀螺仪。 这种类型的设备特别用于航空应用中。 本发明的目的是使用消除盲区的特定光学装置来完成控制激光器不稳定性所需的光学装置。 以这种方式，获得“全光学”固态激光器，无需移动部件，稳定且无盲区。 这些装置尤其包括倒数和不可逆光旋转器，其布置成使得两个反向传播的光学模式以足够不同的频率在空腔中行进以避免模式锁定。
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公开(公告)号：US06430206B1
公开(公告)日：2002-08-06
申请号：US09612957
申请日：2000-07-10
IPC分类号： H01S308
CPC分类号： H01S3/0818 , G02F1/39 , H01S3/0606 , H01S3/07 , H01S3/08059 , H01S3/083 , H01S3/11
摘要： An unstable optical cavity for laser beams, having at least 3 deflection means for making a beam created in the cavity undergo at least three changes in direction so to form an optical ring path, and an optical magnification set disposed among the deflecting means. The at least 3 deflection means are prisms, each of which has an air-glass reflecting interface that provides one of the changes in direction by total reflection. A first of the at least 3 prims is positioned at an output of the cavity and has an air-glass reflecting interface with an insufficient size for a total reflection of the beam in the cavity, and remaining ones of the prisms have an air-glass reflecting interface with a sufficient size for a total reflection of the beam in the cavity.
摘要翻译： 用于激光束的不稳定光腔具有至少3个用于使在空腔中产生的光束的偏转装置经历至少三个方向改变的偏转装置，以形成光环路径，以及设置在偏转装置之间的光学倍率。 至少3个偏转装置是棱镜，每个棱镜具有气玻璃反射界面，其通过全反射提供方向之一的改变。 至少3个原子中的第一个位于空腔的输出处，并且具有不足够的尺寸的气玻璃反射界面，用于在空腔中的光束的全反射，并且剩余的棱镜具有气玻璃 反射界面具有足够的尺寸，用于在腔中完全反射光束。
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公开(公告)号：US5444571A
公开(公告)日：1995-08-22
申请号：US910529
申请日：1992-07-08
CPC分类号： G02F1/37 , G02F1/39 , G02F2001/3542
摘要： Disclosed is a non-linear optical device in which the non-linear medium comprises a circular surface on which the light beam to be processed gets reflected. A structure such as this can be used to resolve the difficulties of making mirrors of the cavity containing the non-linear medium.
摘要翻译： 公开了一种非线性光学装置，其中非线性介质包括其上待处理的光束被反射的圆形表面。 可以使用这样的结构来解决制造包含非线性介质的空腔的镜子的困难。
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公开(公告)号：US5375131A
公开(公告)日：1994-12-20
申请号：US37552
申请日：1993-03-24
CPC分类号： H01S3/305 , H01S2301/20 , H01S3/08063 , H01S3/08068
摘要： A laser includes a gas enclosure placed in an optical cavity and receiving a pump beam to generate at least one first-order and one second-order Stokes wave. One of the mirrors of the cavity is transparent to wavelengths which are higher than the first-order Stokes wave.
摘要翻译： 激光器包括放置在光学腔中并接收泵浦光束以产生至少一个一阶和一个二阶斯托克斯波的气体外壳。 腔的一个反射镜对于高于一阶斯托克斯波的波长是透明的。
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公开(公告)号：US08035818B2
公开(公告)日：2011-10-11
申请号：US12097429
申请日：2006-12-07
IPC分类号： G01C19/64
CPC分类号： G01C19/68
摘要： The field of the invention is that of solid-state laser gyros used for the measurements of rotation speed or relative angular positions. This type of equipment is notably used for aeronautical applications. The object of the invention is to complete the optical devices necessary to control the instability of lasers by specific optical devices enabling elimination of the dead zone and of population inversion gratings exiting in the amplifying medium. An “all optical” solid-state laser is hence obtained without moveable parts, stable and without a dead zone. To this end, the laser gyro according to the invention comprises notably and optical assembly enabling a nonreciprocal optical phase-shift to be introduced between the counterpropagating modes; and control means allowing the phase-shift amplitude to be varied periodically around a mean value that is very approximately zero.
摘要翻译： 本发明的领域是用于测量转速或相对角度位置的固体激光陀螺仪。 这种类型的设备特别用于航空应用。 本发明的目的是完成通过特定光学装置来控制激光器的不稳定性所需的光学装置，从而能够消除在放大介质中退出的死区和群体反转光栅。 因此，“全光学”固体激光器不具有稳定且没有死区的可移动部件。 为此，根据本发明的激光陀螺仪特别包括能够在反向传播模式之间引入不可逆光学相移的光学组件; 以及允许相移幅度围绕非常近似为零的平均值周期性地变化的控制装置。
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