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1. 发明授权

US4529273A Passive phase conjugate mirror 失效
标题翻译：被动相共轭镜
公开(公告)号：US4529273A
公开(公告)日：1985-07-16
申请号：US451849
申请日：1982-12-21
申请人： Mark Cronin-Golomb , Baruch Fischer , Jeffrey O. White , Amnon Yariv
发明人： Mark Cronin-Golomb , Baruch Fischer , Jeffrey O. White , Amnon Yariv
IPC分类号： G02F1/35 , G02B5/08 , G02F1/01
CPC分类号： G02F1/3538
摘要： A passive (self-pumped) phase conjugate mirror uses a third-order nonlinear polarization medium, either of the refractive type (effective nonlinear) or the actual nonlinear type, with an optical system of one or more mirrors to reflect back through the medium a coherent incident beam diffracted by the medium. With two mirrors, they may be aligned to form a linear optical cavity containing the nonlinear medium, or they may be so oriented on one side of the medium that the incident beam transmitted through the medium is reflected back through the medium at an angle with the incident beam, and diffracted light from the incident beam is reflected back through the medium in the opposite direction coincident with the incident beam. A passive phase conjugate mirror may replace an end mirror of an optical cavity for a laser gain medium. Phase distortions of the laser beam in the laser cavity are corrected by the passive phase conjugate mirror.
摘要翻译：无源（自泵浦）相位共轭反射镜使用三阶非线性偏振介质，折射型（有效非线性）或实际非线性类型中的任一者与一个或多个反射镜的光学系统反射回介质a 相干入射光束被介质衍射。使用两个反射镜，它们可以对准以形成包含非线性介质的线性光学腔，或者它们可以在介质的一侧上定向，使得透射通过介质的入射光束通过介质以与入射光束和来自入射光束的衍射光在与入射光束重合的相反方向上通过介质反射回来。无源相位共轭反射镜可以替代用于激光增益介质的光学腔的端镜。激光腔中激光束的相位失真由无源相位共轭反射镜校正。

2. 发明授权

US4880295A Optical device enhancement method and apparatus by control of stimulated brillouin scattering gain 失效
标题翻译：通过控制受激布里渊散射增益的光学器件增强方法和装置
公开(公告)号：US4880295A
公开(公告)日：1989-11-14
申请号：US111941
申请日：1987-10-21
申请人： David A. Rockwell , Metin S. Mangir , Jeffrey O. White , Dennis C. Jones
发明人： David A. Rockwell , Metin S. Mangir , Jeffrey O. White , Dennis C. Jones
IPC分类号： G02F20060101 , G02F1/35 , H01S3/08 , H01S3/10 , H01S3/30
CPC分类号： H01S3/305 , G02F1/3538
摘要： The output of an optical device which involves a stimulated brillouin scattering (SBS) gain medium is enhanced over a range of input beam intensities by providing a gain medium which has a given SBS gain for a given input beam intensity, and modifying the gain medium to reduce its SBS gain coefficient. By lowering the SBS gain coefficient, SBS dominance and suppression of stimulated Raman scattering (SRS) can be mitigated, and the output fidelity of a phase conjugation system with respect to its input can be significantly enhanced. Mechanisms for reducing the SBS gain coefficient include increasing the medium viscosity, thermal conductivity and/or diffusion coefficient, or causing the medium relaxation zone to coincide with the frequency of the phonons involved in the SBS process. Two different media can be mixed together in varying proportions to progressively modify the overall medium SBS gain as the input beam intsnsity is progressively changed.
摘要翻译：涉及受激布里渊散射（SBS）增益介质的光学器件的输出通过提供对于给定输入光束强度具有给定SBS增益的增益介质，并且将增益介质修改为降低其SBS增益系数。通过降低SBS增益系数，可以减轻SBS优势和受激拉曼散射（SRS）的抑制，相位共轭系统相对于其输入的输出保真度可以显着增强。用于降低SBS增益系数的机制包括增加介质粘度，热导率和/或扩散系数，或使介质松弛区与SBS过程中涉及的声子的频率一致。两种不同的介质可以以不同比例混合在一起，以逐渐改变整个介质SBS增益，因为输入波束的精度逐渐改变。

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