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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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12.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：US07663763B2
公开(公告)日：2010-02-16
申请号：US11718717
申请日：2005-10-26
IPC分类号： G01C19/66
CPC分类号： H01S5/183 , H01S5/1071 , H01S5/141
摘要： A laser gyro includes a semiconductor medium and assembled discrete elements, thus offering the possibility of producing large cavities for achieving the desired precision. More precisely, the laser gyro includes an optical ring cavity and a semiconductor amplifying medium with an external cavity having a vertical structure. The semiconductor amplifying medium which is used in reflection includes a stack of plane gain regions that are mutually parallel, and the dimensions of the cavity being substantially are larger than those of the amplifying medium.
摘要翻译： 激光陀螺仪包括半导体介质和组装的分立元件，从而提供产生大腔以获得期望精度的可能性。 更准确地说，激光陀螺仪包括光环腔和具有垂直结构的外腔的半导体放大介质。 用于反射的半导体放大介质包括相互平行的平面增益区的堆叠，并且空腔的尺寸基本上大于放大介质的尺寸。
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公开(公告)号：US07561275B2
公开(公告)日：2009-07-14
申请号：US11576838
申请日：2005-10-06
IPC分类号： G01C19/66
CPC分类号： G01C19/66
摘要： A laser cavity optical architecture of a solid-state laser gyro measures rotational velocity or angular position and is based on a global conservation of the scale factor so that each parameter varies with temperature and avoids optical mode hops.
摘要翻译： 固态激光陀螺仪的激光腔光学架构测量旋转速度或角度位置，并且基于比例因子的全局守恒，使得每个参数随温度变化并避免光学模式跳跃。
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公开(公告)号：US20090073452A1
公开(公告)日：2009-03-19
申请号：US11718717
申请日：2005-10-26
IPC分类号： G01C19/66
CPC分类号： H01S5/183 , H01S5/1071 , H01S5/141
摘要： The field of the invention is that of solid-state laser gyros used in particular in inertia control systems. This type of equipment is used for example for aeronautical applications. It is possible to produce a solid-state laser gyro from optically or electrically pumped semiconductor media. Currently laser gyros of the latter type are monolithic and small in size. They do not make it possible, on the one hand, to achieve the precision comparable to that of gas laser gyros and, on the other hand, to implement optical methods for eliminating frequency coupling at low rotation speeds or temperature drifts. One subject of the invention is a solid-state laser gyro comprising a semiconductor medium and consisting of assembled discrete elements, thus offering the possibility of producing large cavities for achieving the desired precision. More precisely, the laser gyro comprises an optical ring cavity and a semiconductor amplifying medium with an external cavity having a vertical structure, comprising a stack of plane gain regions that are mutually parallel, the dimensions of the cavity being substantially larger than those of the amplifying medium, said amplifying medium being used in reflection.
摘要翻译： 本发明的领域是特别用于惯性控制系统的固体激光陀螺仪。 这种类型的设备例如用于航空应用。 可以从光学或电泵浦的半导体介质制造固态激光陀螺仪。 目前，后一种类型的激光陀螺是整体的，体积小的。 一方面，它们不能实现与气体激光陀螺仪相当的精度，另一方面，实现了在低转速或温度漂移下消除频率耦合的光学方法。 本发明的一个主题是包括半导体介质并由组装的分立元件组成的固体激光陀螺仪，因此提供产生大腔以获得期望精度的可能性。 更精确地，激光陀螺仪包括光环腔和具有垂直结构的外腔的半导体放大介质，包括相互平行的一叠平面增益区域，空腔的尺寸基本上大于放大器的尺寸 介质，所述放大介质用于反射。
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公开(公告)号：US07319513B2
公开(公告)日：2008-01-15
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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17.发明授权Multi-oscillator solid-state laser gyro passively stabilized by a frequency-doubling crystal device 失效多振荡器固态激光陀螺被被倍频晶振器件无源稳定公开(公告)号：US08587788B2
公开(公告)日：2013-11-19
申请号：US13102741
申请日：2011-05-06
CPC分类号： G01C19/667
摘要： A laser gyro for measuring the angular velocity or the angular position relative to a defined rotation axis includes: an optical ring cavity; a solid-state amplifying medium; and a non-reciprocal magneto-optic device; which are arranged so that four linearly polarized propagation modes can propagate within the cavity, the magneto-optic device introducing a frequency bias between the modes propagating in a first direction and the modes propagating in the opposite direction. In the device, the cavity also includes a stabilizer device for stabilizing the intensity of the four propagation modes at substantially equivalent levels, said device comprising at least one optical element made of a non-linear crystal of the frequency-doubling type.
摘要翻译： 用于测量相对于限定旋转轴线的角速度或角位置的激光陀螺仪包括：光环腔; 固态放大介质; 和不可逆磁光器件; 其布置成使得四个线性极化传播模式可以在腔内传播，磁光器件在沿第一方向传播的模式和沿相反方向传播的模式之间引入频率偏置。 在该装置中，空腔还包括稳定装置，用于以基本相同的水平稳定四种传播模式的强度，所述装置包括至少一个由倍频型的非线性晶体制成的光学元件。
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公开(公告)号：US20110071787A1
公开(公告)日：2011-03-24
申请号：US12820940
申请日：2010-06-22
CPC分类号： G01C19/66
摘要： Solid-state gyrolaser having a device for stabilizing the intensities making it possible to maintain equilibrium of the two counter-propagating modes having at least a means for calculating a rotation measurement (Ω, IΩ) of the gyrolaser on the basis of the counter-propagating modes having a frequency difference (Δνmes) between them, by assuming that the frequency difference (Δνmes) between the two counter-propagating modes is induced only by the rotation of the cavity. The gyrolaser also includes a means for measuring the control command (Co), a means for storing a behaviour model (Mo) of a frequency bias (Δνb) induced by the device for stabilizing the intensities, as a function of the control command, a means for calculating the frequency bias (Δνb) induced by the device for stabilizing the intensities, on the basis of the value of the control command (Co) and the model (Mo), a means for calculating the bias (ΔΩb, ΔIΩb) in the rotation measurement (Ω, IΩ), induced by the frequency bias (Δνb), and a means for compensating for the bias (ΔΩb, ΔIΩb) in the rotation measurement (Ω, IΩ).
摘要翻译： 固体陀螺仪具有用于稳定强度的装置，使得可以保持两个反向传播模式的平衡，其具有至少一种用于基于计数器计算陀螺仪的旋转测量（＆amp; OHgr，I＆OHgr）的装置 通过假设两个反向传播模式之间的频率差（＆Dgr;＆ngr; mes）仅由腔的旋转引起，它们之间具有频率差（＆Dgr;＆sgr; mes）的传播模式。 陀螺仪还包括用于测量控制命令（Co）的装置，用于存储由装置引起的用于稳定强度的频率偏差（＆Dgr;＆ngr; b）的行为模型（Mo）的装置，作为 控制指令，用于根据控制指令（Co）和模型（Mo）的值计算用于稳定强度的装置引起的频率偏差（＆Dgr;＆ngr; b）的装置，用于计算 偏置（＆Dgr;＆OHgr; b，＆Dgr; I＆OHgr; b）在频率偏差（＆Dgr;＆ngr; b）诱发的旋转测量（＆OHgr; I＆OHgr;）中）和补偿偏差 ;＆OHgr; b，＆Dgr; I＆OHgr; b）在旋转测量（＆OHgr; I＆OHgr）中。
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公开(公告)号：US07710575B2
公开(公告)日：2010-05-04
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
IPC分类号： G01C19/64
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：US07230686B1
公开(公告)日：2007-06-12
申请号：US10526611
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 ring-shaped solid-state lasers using specific optic devices that eliminate the blind region without adding a measurement bias. In this way, a “fully optic” solid-state laser is obtained, without moving parts, stable, and without blind region.These devices comprise in particular polarization separation optical devices, reciprocal and nonreciprocal optical rotators arranged so that four linearly polarized 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。 本发明的目的是完成使用消除盲区而不增加测量偏压的特定光学器件来控制环形固态激光器的不稳定性所需的光学器件。 以这种方式，获得“全光学”固态激光器，而无需移动部件，稳定且无盲区。 这些装置特别地包括偏振分离光学装置，布置为使得四个线性偏振光学模式在空腔中以足够不同的频率行进以避免模式锁定的倒数和非互逆光学旋转器。
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