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    • 2. 发明授权
    • LTG AlGaAs non-linear optical material and devices fabricated therefrom
    • LTG AlGaAs非线性光学材料及其制造的器件
    • US5508829A
    • 1996-04-16
    • US264177
    • 1994-06-22
    • John L. FreeoufRodney T. HodgsonPeter D. KirchnerMichael R. MellochJerry M. WoodallDavid D. Nolte
    • John L. FreeoufRodney T. HodgsonPeter D. KirchnerMichael R. MellochJerry M. WoodallDavid D. Nolte
    • G02F1/355G02F1/015G02F1/35H01L31/0232
    • G02F1/3551G02F2202/101G03H2001/0264
    • A light responsive device (10) has a body (12) that includes a matrix comprised of Group III-V material, the matrix having inclusions (14) comprised of a Group V material contained therein. The body is responsive to a presence of a light beam that has a spatially varying intensity for modifying in a corresponding spatially varying manner a distribution of trapped photoexcited charge carriers within the body. The distribution of trapped charge carriers induces a corresponding spatial variation in at least one optical property of the Group III-V material, such as the index of refraction of the Group III-V material and/or an absorption coefficient of the Group III-V material. The Group III-V material is comprised of LTG GaAs:As or LTG AlGaAs:As. In an optical storage medium embodiment of the invention the spatial variation in the intensity of the light beam results from a simultaneous application of a first light beam (LB1) and a second light beam (LB2) to the body, and from interference fringes resulting from an intersection of said first and second light beams.
    • 光响应装置(10)具有主体(12),其包括由III-V族材料构成的基体,所述基体具有由其中所含的V族材料构成的夹杂物(14)。 身体响应于存在具有空间变化的强度的光束,以便以对应的空间变化的方式修改被俘获的光激发电荷载体在体内的分布。 捕获的电荷载体的分布在III-V族材料的至少一种光学性质中引起相应的空间变化,例如III-V族材料的折射率和/或III-V族的吸收系数 材料。 III-V族材料由LTG GaAs:As或LTG AlGaAs:As组成。 在本发明的光学存储介质的实施例中,光束的强度的空间变化是由于将第一光束(LB1)和第二光束(LB2)同时施加到主体,并且由干涉条纹 所述第一和第二光束的交叉。