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公开(公告)号：US09803981B2
公开(公告)日：2017-10-31
申请号：US14504322
申请日：2014-10-01
申请人： THALES
CPC分类号： G01C19/667 , G01C19/726
摘要： The general field of the invention is that of passive resonator gyros comprising an injection laser emitting an initial optical beam at a first frequency and a fiber optic cavity. The gyro according to the invention operates with three optical beams at three different optical frequencies. A first beam is injected in a first direction of rotation, the second and the third beam are injected in the contrary direction. The gyro includes three slaving devices maintaining each optical frequency at a specific mode of resonance of the cavity. The gyro includes means for measuring the frequency differences existing between the different frequencies. Combined together, these differences are representative of the length of the cavity and the angular rotational velocity of the cavity along an axis perpendicular to its plane.
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公开(公告)号：US20150098089A1
公开(公告)日：2015-04-09
申请号：US14504322
申请日：2014-10-01
申请人： THALES
IPC分类号： G01C19/66
CPC分类号： G01C19/667 , G01C19/726
摘要： The general field of the invention is that of passive resonator gyros comprising an injection laser emitting an initial optical beam at a first frequency and a fibre optic cavity. The gyro according to the invention operates with three optical beams at three different optical frequencies. A first beam is injected in a first direction of rotation, the second and the third beam are injected in the contrary direction. The gyro includes three slaving devices maintaining each optical frequency at a specific mode of resonance of the cavity. The gyro includes means for measuring the frequency differences existing between the different frequencies. Combined together, these differences are representative of the length of the cavity and the angular rotational velocity of the cavity along an axis perpendicular to its plane.
摘要翻译： 本发明的一般领域是包括在第一频率处发射初始光束的注入激光器和光纤腔的无源谐振器陀螺仪。 根据本发明的陀螺仪以三个不同光频率的三个光束操作。 第一光束以第一旋转方向注入，第二光束和第三光束以相反的方向注入。 陀螺仪包括保持每个光学频率处于空腔的特定谐振模式的三个从动装置。 陀螺仪包括用于测量不同频率之间存在的频率差的装置。 结合在一起，这些差异代表腔的长度和空腔沿着垂直于其平面的轴的角旋转速度。
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公开(公告)号：US5371591A
公开(公告)日：1994-12-06
申请号：US570839
申请日：1990-08-13
申请人： Graham J. Martin , Leo K. Lam
发明人： Graham J. Martin , Leo K. Lam
CPC分类号： G01C19/667 , H01S3/083
摘要： A triaxial multioscillator for operation in accordance with a mode of operation requiring the imposition of a substantially uniform axial magnetic field on the gain region of each lasing cavity. An integral frame of glass ceramic material has a rhombic dodecahedral shape and includes three closed lasing cavities, each formed of four straight segments. The cavities include three mutually parallel segments, one from each cavity, that are regularly spaced on a circle perpendicular to the axis of the frame. An internal cathode and six anodes are associated with the frame to provide gain in each of such three segments. The frame is positioned within a closed cylindrical element of soft iron composition by means of a fixture. The fixture positions magnets adjacent the top and bottom of the element to generate parallel lines of magnetic flux therein. The frame is positioned within the container in such a way that the cavity segments containing the three gain regions are aligned with the parallel lines of flux to produce the requisite axial fields in the three gain regions.
摘要翻译： 一种用于根据操作模式操作的三轴多振荡器，其需要在每个激光腔的增益区上施加基本上均匀的轴向磁场。 玻璃陶瓷材料的整体框架具有菱形十二面体形状，并且包括三个封闭的激光腔，每个腔由四个直段形成。 空腔包括三个相互平行的段，一个来自每个腔，在与框架的轴线垂直的圆周上规则地间隔开。 内部阴极和六个阳极与框架相关联，以在这三个段中的每一个中提供增益。 框架通过固定装置位于软铁组合物的闭合圆柱形元件内。 固定装置将邻近元件的顶部和底部的磁体定位成在其中产生平行的磁通线。 框架以这样的方式定位在容器内，使得包含三个增益区域的空腔区段与平行的通量线对准，以在三个增益区域中产生必需的轴向场。
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公开(公告)号：US4141651A
公开(公告)日：1979-02-27
申请号：US758223
申请日：1977-01-10
申请人： Irl W. Smith , Terry A. Dorschner
发明人： Irl W. Smith , Terry A. Dorschner
CPC分类号： G01C19/667
摘要： A four frequency laser gyroscope system having a rugged and compact output structure for producing output signals representing the frequency differences between counter-circulating wave pairs circulating as two beams within the gyroscope cavity. A partially transmitting dielectric mirror forms both one of the cavity reflectors and the means for extracting a small portion of each beam. The two extracted beams are combined on a beam splitter. Both the transmitted and reflected beams from the output of the beam splitter, each containing waves of all four frequencies, are utilized. Each resultant beam is then polarization discriminated to extract the desired signal content. The entire structure is adapted for rigid mechanical coupling and may be constructed to have a small size.
摘要翻译： 一种具有坚固且紧凑的输出结构的四频激光陀螺仪系统，用于产生表示作为陀螺仪腔内的两个光束循环的反循环波对之间的频率差的输出信号。 部分透射的介质镜形成腔反射器中的一个和用于提取每个光束的小部分的装置。 两个提取的光束组合在分束器上。 来自波束分离器的输出的每个包含所有四个频率的波的发射和反射波束都被利用。 然后对每个合成的光束进行极化鉴别，以提取所需的信号内容。 整个结构适用于刚性机械联轴器，并且可以构造成具有小尺寸。
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公开(公告)号：US4108553A
公开(公告)日：1978-08-22
申请号：US756672
申请日：1977-01-04
CPC分类号： G01C19/667
摘要： A four frequency laser gyroscope system having parallel processing of path length control and detection signals. Two output signal beams each containing components of two of the four waves circulating in the laser cavity are shone upon separate detector diodes. The output signals from the diodes contain both high and low frequency components which are separated in a crossover circuit. The low frequency component is processed to control the optical path length while the high frequency component is processed to produce a digital signal representing the amount of rotation of the laser gyroscope cavity.
摘要翻译： 具有并行处理路径长度控制和检测信号的四频激光陀螺仪系统。 每个包含在激光腔中循环的四个波中的两个的分量的两个输出信号光在单独的检测器二极管上照射。 来自二极管的输出信号包含在交叉电路中分离的高频和低频分量。 处理低频分量以控制光路长度，同时处理高频分量以产生表示激光陀螺仪腔的旋转量的数字信号。
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公开(公告)号：US3890047A
公开(公告)日：1975-06-17
申请号：US80201469
申请日：1969-02-25
申请人： UNITED AIRCRAFT CORP
发明人： WARNER RICHARD T
CPC分类号： H01S3/083 , G01C19/667
摘要： The polarization anisotropy which is utilized together with directional anisotropy so as to form a differential laser gyro system having two laser gyros operating in the same cavity with cavity modes of different frequencies in the form of mutually perpendicular plane polarization in each of the clockwise and counterclockwise directions, is achieved by providing a cavity having an odd number of dielectric mirrors and a total path length adjusted so that the phase reversal of one plane polarized wave (eg, vertical) results in a frequency difference between it and the other (eg, horizontal) polarized wave. The directional anisotropy may suitably be provided by a Faraday cell disposed in the optical path between quarter wave plates.
摘要翻译： 与方向各向异性一起使用的偏振各向异性，以便形成具有两个激光陀螺仪的差分激光陀螺仪系统，该激光陀螺仪具有两个激光陀螺仪，该激光陀螺仪在相同的空腔中以不同频率的空腔模式在每个顺时针和逆时针方向上以相互垂直的平面偏振的形式 通过提供具有奇数个电介质反射镜的空腔和被调整的总路径长度来实现，使得一个平面偏振波（例如，垂直）的相位反转导致它与另一个之间的频率差（例如，水平） 极化波。 方向各向异性可以适当地由设置在四分之一波片之间的光路中的法拉第单元提供。
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7.发明申请Solid-state multioscillator ring laser gyro using a <100>-cut crystalline gain medium 审中-公开使用<100>切割晶体增益介质的固态多振荡器环形激光陀螺仪公开(公告)号：US20100265513A1
公开(公告)日：2010-10-21
申请号：US12808582
申请日：2008-12-01
IPC分类号： G01C19/66
CPC分类号： G01C19/66 , G01C19/667
摘要： A multioscillator ring laser gyro includes an optical ring cavity, a solid-state amplifying medium and a measurement device arranged in such a way that a first linearly polarized propagation mode and a second linearly polarized propagation mode, perpendicular to the first mode, propagate in a first direction in the cavity and in such a way that a third linearly polarized propagation mode parallel to the first mode and a fourth linearly polarized propagation mode parallel to the second mode propagate in the opposite direction. The amplifying medium is a crystal of cubic symmetry having an entry face and an exit face, the crystal being cut so that said faces are approximately perpendicular to the crystallographic direction, the various modes propagating in directions approximately perpendicular to said faces.
摘要翻译： 多振荡器环形激光陀螺仪包括光环腔，固态放大介质和测量装置，其布置成使得垂直于第一模式的第一线性极化传播模式和第二线性偏振传播模式在 并且使得与第一模式平行的第三线性极化传播模式和平行于第二模式的第四线性极化传播模式沿相反方向传播。 放大介质是具有入射面和出射面的立方对称晶体，所述晶体被切割，使得所述面几乎垂直于<100>晶体方向，所述各种模式在大致垂直于所述面的方向上传播。
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公开(公告)号：US6088149A
公开(公告)日：2000-07-11
申请号：US283484
申请日：1994-07-29
申请人： John P. Rahn , Leo K. Lam
发明人： John P. Rahn , Leo K. Lam
CPC分类号： G02B1/08 , G01C19/667 , G02B1/02 , G02B27/28 , G02B5/3083 , G02F1/093
摘要： The invention is a focusing polarization rotator for use in the resonant mirror system of a ring laser gyroscope. The focusing polarization rotator accomplishes the traditional task of rotating the plane of polarization of a light beam that passes through it and at the same time performs a focusing function on the light rays. In a resonant mirror system, the device acts to constrain the transverse dimensions of light beams that follow the closed light-beam path established by the resonant mirror system thereby obviating the need for one or more curved mirrors that usually perform this function. The focusing polarization rotator is a wedge-shaped lens made from either a magneto-optic transparent material with a magnetic field within the lens or a material having different indices of refraction for left- and right-circularly-polarized light. The wedge shape of the lens greatly improves the bias stability of the RLG in which it is used.
摘要翻译： 本发明是用于环形激光陀螺仪的谐振反射镜系统中的聚焦偏振旋转器。 聚焦偏振旋转器实现了通过它的光束旋转偏振平面的传统任务，同时对光线进行聚焦功能。 在谐振反射镜系统中，该装置用于限制遵循由谐振反射镜系统建立的闭合光束路径的光束的横向尺寸，从而避免了对通常执行该功能的一个或多个弯曲反射镜的需要。 聚焦偏振旋转器是由透镜内具有磁场的磁光透明材料制成的楔形透镜，或对于左右偏振光具有不同折射率的材料。 透镜的楔形大大提高了使用它的RLG的偏置稳定性。
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9.发明授权Simplified dispersion equalization field coil design for a multioscillator ring laser gyroscope 失效用于多振荡器环形激光陀螺仪的简化色散均衡场线圈设计
公开(公告)号：US5488622A
公开(公告)日：1996-01-30
申请号：US283393
申请日：1994-07-29
申请人： Robert A. Mitchell
发明人： Robert A. Mitchell
CPC分类号： G01C19/667
摘要： At least one coil (32) is located on an exterior side face (30) of a frame (12) of a ring laser gyroscope (10) such that a significant component of the magnetic field generated by the coil is colinear with the plasma discharge of the gyroscope, and by which dispersion equalization of the gyroscope can be effected. The coil may be supported by a magnetically permeable annular bobbin (40), which is set about a mirror (26) on side face (30) and which may be partly set within grooves in the side face, to reduce the current necessary to effect dispersion equalization and to provide shielding of the mirror from the effects of tangential and transverse fields, and to increase the shielding effects for the mirror, both from Faraday rotator magnets (16) and from external magnetic fields. For those mirrors where no coils are present, the annular bobbins are used solely for their shielding properties.
摘要翻译： 至少一个线圈（32）位于环形激光陀螺仪（10）的框架（12）的外侧面（30）上，使得由线圈产生的磁场的显着分量与等离子体放电 的陀螺仪，并且可以通过陀螺仪实现陀螺仪的色散均衡。 线圈可以由可渗透的环形线轴（40）支撑，环形绕线筒（40）围绕侧面（30）上的反射镜（26）设置，并且可以部分地设置在侧面的凹槽内，以减少所需的电流 分散均衡，并提供反射镜对切向和横向场的影响的屏蔽，并增加了来自法拉第转子磁体（16）和外部磁场的反射镜的屏蔽效果。 对于那些没有线圈的镜子，环形线轴仅用于屏蔽性能。
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公开(公告)号：US5367377A
公开(公告)日：1994-11-22
申请号：US195984
申请日：1994-02-14
申请人： John P. Rahn
发明人： John P. Rahn
CPC分类号： H01S3/083 , G01C19/667
摘要： Disclosed herein is a Solid State Split-Gain Multioscillator Ring Laser Gyroscope comprising, in a preferred embodiment, a solid state Nd:YAG crystal body defining a non-planar resonator path. Magnetic sources are provided which effectuate the Split-Gain Selective Mode Suppression Phenomena. Total internal reflection along facets of the crystal or glass allow reduced cost during manufacture of the Gyroscope. An alternative embodiment includes a solid state active medium on a chip, allowing the resonator path to be primarily lying in a glass monolithic compact solid state frame.
摘要翻译： 本文公开了一种固态分支增益多振荡器环形激光陀螺仪，在优选实施例中包括限定非平面谐振器路径的固态Nd：YAG晶体。 提供磁源来实现分流增益选择模式抑制现象。 在晶体或玻璃方面的全内反射允许在陀螺仪制造期间降低成本。 替代实施例包括芯片上的固态有源介质，允许谐振器路径主要位于玻璃整体式紧凑型固态框架中。
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