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1. 发明公开

EP0840163A3 Loop phase-conjugate mirror for depolarized beams 失效
标题翻译： Phasenconjugationsspiegel在去极化光束环配置
公开(公告)号：EP0840163A3
公开(公告)日：2000-06-07
申请号：EP97118768.7
申请日：1997-10-29
申请人： Hughes Electronics Corporation
发明人： Betin, Alexander A. , Mangir, Metin S.
IPC分类号： G02F1/35
CPC分类号： G02F1/3538 , H01S3/083 , H01S3/10076
摘要： A loop four-wave mixing phase conjugator that can be used with depolarized signal beams comprises a polarization separator (10), a polarization mixer (19), an optical diode (20), a gain medium (22) and relay optics (14, 16) that together form a unidirectional laser resonator. In operation, the polarization separator separates a signal beam (ε 1 ) into orthogonally polarized signal beam components (ε 11 ) and (ε 12 ) and directs them to a nonlinear medium (12). The components propagate through the nonlinear medium and emerge as loop beam (ε 2 ), with orthogonally polarized components (ε 21 ) and (ε 22 ). The polarization mixer mixes the energy from the two orthogonally polarized loop beam components, and relay optics direct the loop beam components back to the nonlinear medium at an angle with respect to the input beam. The loop beam components intersect and optically interfere with signal beam components (ε 11 ) and (ε 12 ) in the nonlinear medium to form gratings (18). The optical diode and gain medium are positioned in the optical loop so that an oscillation beam (ε 3 ) builds up from optical noise in the resonator and oscillates in a direction counter to the propagation direction of loop beam components (ε 21 ) and (ε 22 ). A portion of oscillation beam (ε 3 ) is transmitted by the gratings, and exits the optical loop as an output beam (ε 4 ). (ε 3 ) is phase conjugate to the input beam (ε 1 ) in both the spatial and polarization senses.

2. 发明公开

EP0840162A3 Compact phase-conjugate mirror utilizing four-wave mixing in a loop configuration 失效
标题翻译：使用环配置中的四波混频技术紧凑相位共轭
公开(公告)号：EP0840162A3
公开(公告)日：2000-06-07
申请号：EP97118767.9
申请日：1997-10-29
申请人： Hughes Electronics Corporation
发明人： Betin, Alexander A. , Mangir, Metin S. , Rockwell, David A.
IPC分类号： G02F1/35
CPC分类号： G02F1/3538 , H01S3/083 , H01S3/10076
摘要： A compact loop four-wave mixing phase conjugator that can be used in practical optical applications comprises a reflective nonlinear cell (12), relay optics (2, 4, 6, 8), an optical gain medium (26), and an optical diode (24) that together form a unidirectional ring laser resonator. In operation, a signal beam (ε 1 ) is directed to the nonlinear cell (12), where it passes through a nonlinear medium (14) contained within the cell and is reflected out of the cell as loop beam (ε 2 ). The relay optics direct loop beam (ε 2 ) through the optical diode (24), optical gain medium (38), and back to the nonlinear cell (12), where it intersects and optically interferes with the signal beam (ε 1 ) to form a refractive index grating (22) in the nonlinear medium (14). The optical diode (24) and gain medium (38) are positioned in the loop so that an oscillation beam (ε 3 ) builds up from optical noise in the resonator and oscillates in a direction counter to the propagation direction of loop beam (ε 2 ). A portion of oscillation beam (ε 3 ) is transmitted by the refractive index grating, reflects off the reflective portion (16) of the nonlinear cell (12) and emerges from the cell as phase conjugate output beam (ε 4 ).

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