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    • 62. 发明授权
    • Solid-state laser gyro having orthogonal counterpropagating modes
    • 具有正交反向传播模式的固态激光陀螺仪
    • US07710575B2
    • 2010-05-04
    • US12097367
    • 2006-12-07
    • Sylvain SchwartzGilles FeugnetJean-Paul PocholleAugustin MignotBastien Steinhausser
    • Sylvain SchwartzGilles FeugnetJean-Paul PocholleAugustin MignotBastien Steinhausser
    • G01C19/64
    • G01C19/66
    • 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.
    • 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。
    • 64. 发明授权
    • Four-mode stabilized solid-state gyrolaser without blind region
    • 无盲区的四模稳态固体陀螺仪
    • US07230686B1
    • 2007-06-12
    • US10526611
    • 2005-03-16
    • Sylvain SchwartzGilles FeugnetJean-Paul Pocholle
    • Sylvain SchwartzGilles FeugnetJean-Paul Pocholle
    • G01P3/36G01C19/64H01S3/083
    • G01C19/66
    • 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.
    • 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。