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    Optical wavelength converter device
    3.
    发明授权
    Optical wavelength converter device 失效

    公开(公告)号：US4952013A

    公开(公告)日：1990-08-28

    申请号：US328266

    申请日：1989-03-24

    申请人： Akinori Harada ,  Yoji Okazaki ,  Koji Kamiyama ,  Shinsuke Umegaki

    发明人： Akinori Harada ,  Yoji Okazaki ,  Koji Kamiyama ,  Shinsuke Umegaki

    IPC分类号： G02F1/37 ,  G02F1/377 ,  G02F1/383

    CPC分类号： G02F1/377 ,  G02F1/383 ,  G02F2001/374

    摘要： An optical wavelength converter device of the optical fiber type comprises a core made of a nonlinear optical material and cladding of an amorphous material and surrounding the core, the cladding having a refractive index lower than the refractive index of the core. Another optical wavelength converter device comprises a two- or three-dimensional optical wavelength converter device produced by growing a nonlinear optical material crystal as an optical waveguide on or in an amorphous substrate having a refractive index lower than the refractive index of the nonlinear optical material crystal. Phase matching is achieved between a radiation mode of a wavelength-converted wave in the cladding or the substrate and a nonlinear polarized wave generated by a waveguide mode of first and second fundamental waves in the core or the optical waveguide.

    Method for producing organic crystal and crystal growth cell therefor
    7.
    发明授权
    Method for producing organic crystal and crystal growth cell therefor 失效
    生产有机晶体及其晶体生长细胞的方法

    公开(公告)号：US5363797A

    公开(公告)日：1994-11-15

    申请号：US879105

    申请日：1992-05-04

    申请人： Naota Uenishi ,  Takafumi Uemiya ,  Yo Shimizu ,  Akira Mizoguchi ,  Yasuji Oogaki ,  Yasuhiro Hattori ,  Shinsuke Umegaki

    发明人： Naota Uenishi ,  Takafumi Uemiya ,  Yo Shimizu ,  Akira Mizoguchi ,  Yasuji Oogaki ,  Yasuhiro Hattori ,  Shinsuke Umegaki

    IPC分类号： C30B11/00 ,  C30B7/02

    CPC分类号： C30B11/003 ,  C30B11/00 ,  C30B11/002 ,  C30B29/60

    摘要： A method for producing an organic crystal is disclosed. One embodiment comprises maintaining a capillary tube containing a fused liquid of an organic crystal material and having a fused liquid reservoir at one end thereof at a temperature not less than the fusion point of the organic crystal material together with the fused liquid reservoir, reducing the temperature of the fused liquid in the fused liquid reservoir to precipitate seed crystals, and then slowly cooling the capillary tube successively from the end toward the other end to allow a single crystal to grow from the seed crystal in the capillary tube. Because of the large quantity of the fused liquid, a seed crystal can be formed and allowed to grow even from a fused liquid of an organic crystal material which hardly crystallizes in the form of a fused liquid. Another embodiment comprises charging a solution of an organic crystal material in a capillary tube under heat, rapidly reducing the temperature of one end of the capillary tube to precipitate polycrystals, and then slowly cooling the capillary tube successively from the end toward the other end to allow a single crystal to grow from the polycrystal as a seed crystal. A seed crystal grows from a solution of an organic crystal material under control of crystal form to obtain a single crystal which has no inversion symmetry center, is free from lattice defect or rearrangement, and less causative of a laser beam loss.

    摘要翻译： 公开了一种制造有机晶体的方法。 一个实施例包括保持含有有机晶体材料的熔融液体的毛细管，并且在其一端处具有熔融液体储存器，其温度不低于有机晶体材料与熔融液体储存器的熔点，从而降低温度 的熔融液体储存器中的熔融液体以沉淀晶种，然后从端部朝向另一端依次缓慢冷却毛细管，以允许单晶从毛细管中的晶种生长。 由于熔融液体的量大，所以可以形成晶种，甚至可以从熔融液体形式难以结晶的有机晶体材料的熔融液中生长出来。 另一个实施方案包括在加热下将有机晶体材料的溶液装入毛细管中，快速降低毛细管一端的温度以沉淀多晶体，然后从末端向另一端缓慢冷却毛细管，以允许 单晶从多晶生长为晶种。 晶体从晶体形式的有机晶体材料的溶液中生长，得到不具有反转对称中心的单晶，没有晶格缺陷或重排，并且导致激光束损耗的降低。

    Optical wavelength conversion device, and a method of making the same
    8.
    发明授权
    Optical wavelength conversion device, and a method of making the same 失效
    光波长转换装置及其制造方法

    公开(公告)号：US4820011A

    公开(公告)日：1989-04-11

    申请号：US70442

    申请日：1987-07-07

    申请人： Shinsuke Umegaki ,  Yoji Okazaki ,  Kozi Kamiyama

    发明人： Shinsuke Umegaki ,  Yoji Okazaki ,  Kozi Kamiyama

    IPC分类号： G02F1/37 ,  G02F1/377 ,  G02B6/34 ,  G02B6/26

    CPC分类号： G02F1/377 ,  G02F2001/374

    摘要： An optical wavelength conversion device is constituted by a pair of substrates disposed facing each other, and an optical waveguide formed of a nonlinear optical material and disposed between the substrates, thereby to convert a fundamental wave entering the optical wavelength conversion device formed to a second harmonic which is phase matched by Cherenkov radiation. At least one of the substrates is provided with a grating for entry of the fundamental wave, which is formed on a surface contacting the optical waveguide, and/or with a grating for radiation of the second harmonic, which is formed on a surface opposite to the surface contacting the optical waveguide. The optical wavelength conversion device is made by forming grooves on the substrates, filling a slight space between the substrates with a crystallizable organic nonlinear optical material, and gradually crystallizing the optical material.

    摘要翻译： 光波长转换装置由彼此相对配置的一对基板和由非线性光学材料形成并设置在基板之间的光波导构成，从而将进入形成为二次谐波的光波长转换装置的基波 这是切伦科夫辐射的相位匹配。 至少一个基板设置有用于进入基波的光栅，该光栅形成在与光波导接触的表面上，和/或与用于二次谐波辐射的光栅形成，该光栅形成在与 表面接触光波导。 通过在基板上形成槽，用可结晶的有机非线性光学材料填充基板之间的微小空间，并使光学材料逐渐结晶来制造光波长转换元件。