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公开(公告)号：US4899359A
公开(公告)日：1990-02-06
申请号：US283013
申请日：1988-12-08
申请人： Seiki Yano , Toshiki Hijikata
发明人： Seiki Yano , Toshiki Hijikata
CPC分类号： G11B7/127 , H01S5/4031 , H01S5/2232 , H01S5/24
摘要： An optical memory semiconductor laser apparatus incorporating a recording semiconductor laser device for an optical memory and a replaying semiconductor laser device for an optical memory therein into a single body, wherein the oscillation threshold current of replaying semiconductor laser device is smaller than that of recording semiconductor laser device.
摘要翻译： 一种将用于光学存储器的记录半导体激光器件和用于其中的光学存储器的重放半导体激光器件结合到单体中的光学存储器半导体激光器装置，其中重放半导体激光器件的振荡阈值电流小于记录半导体激光器的振荡阈值电流 设备。
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2.发明授权
公开(公告)号：US4862473A
公开(公告)日：1989-08-29
申请号：US105585
申请日：1987-10-08
申请人： Seiki Yano , Toshiki Hijikata
发明人： Seiki Yano , Toshiki Hijikata
CPC分类号： H01S5/026 , H01S5/0604 , H01S5/22
摘要： A semiconductor laser apparatus includes a groove of a specified length that is formed by etching an end portion of a semiconductor laser element, and a higher harmonic generating device having a waveguide of approximately the same cross-sectional dimensions as the dimensions of the resonator that is mounted in the semiconductor laser element. The higher harmonic generating device is secured by being fused in the groove with the optical axis of the waveguide coinciding with the optical axis of the resonator.
摘要翻译： 半导体激光装置包括通过蚀刻半导体激光元件的端部而形成的规定长度的槽，以及具有与谐振器的尺寸大致相同的横截面尺寸的波导的高次谐波发生装置 安装在半导体激光元件中。 高次谐波发生装置通过熔合在凹槽中而固定，波导的光轴与谐振器的光轴重合。
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公开(公告)号：US4856006A
公开(公告)日：1989-08-08
申请号：US83352
申请日：1987-08-11
申请人： Seiki Yano , Toshiki Hijikata
发明人： Seiki Yano , Toshiki Hijikata
CPC分类号： G02F1/377
摘要： A semiconductor harmonic generating device comprising a nonlinear medium and a waveguide which is provided in the upper face of the nonlinear medium. A higher harmonic laser light from a fundamental wave laser light which passes through the waveguide, wherein the waveguide has refractive index dispersion means for counterbalancing the refractive index difference caused by wavelength dispersion, occurring in the nonlinear medium, between the fundamental wave laser light and the higher harmonic laser light.
摘要翻译： 一种包括非线性介质和设置在非线性介质的上表面中的波导的半导体谐波产生装置。 来自通过波导的基波激光的高次谐波激光，其中波导具有折射率分散装置，用于在基波激光与基波激光之间发生在非线性介质中的波长色散引起的折射率差平衡 高次谐波激光。
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公开(公告)号：US4896933A
公开(公告)日：1990-01-30
申请号：US267730
申请日：1988-11-04
CPC分类号： G02F1/377
摘要： A higher harmonic wave generator, comprising: (1) a first optical waveguide made of a nonlinear optical material, having a structure which can guide the incident fundamental wave; and (2) a second optical waveguide made of nonlinear optical material, connected to the first optical wave guide optically, having a structure which can guide a higher harmonic wave of the fundamental wave; wherein the effective refractive index of the first optical waveguide is made to be equal to the effective refractive index of the second optical waveguide.
摘要翻译： 一种高次谐波发生器，包括：（1）由非线性光学材料制成的具有可引导入射基波的结构的第一光波导; 和（2）由非线性光学材料制成的第二光波导，其光学连接到第一光波导，具有能够引导基波的高次谐波的结构; 其中使第一光波导的有效折射率等于第二光波导的有效折射率。
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5.发明授权
公开(公告)号：US4858215A
公开(公告)日：1989-08-15
申请号：US95566
申请日：1987-09-10
CPC分类号： G11B7/1384 , G11B7/0912 , G11B7/124
摘要： An integrated optical disc pickup comprising an optical waveguide in the form of a insulation layer provided on the surface of a substrate, a semiconductor laser disposed outside the waveguide, a beam splitter of the transmission type and a Luneburg lens provided on the path of propagation of a laser beam from the semiconductor laser through the waveguide and arranged in the order mentioned in a direction away from the laser, a transmission grating provided on the path through the waveguide to be followed by the laser beam upon having its direction changed by the beam splitter after emanating from the laser, passing through the beam splitter and the Luneburg lens, being reflected from an optical disc disposed outside the waveguide and passing through the Luneburg lens, and first and second photodetectors disposed on the paths of propagation through the waveguide of two portions of the laser beam divided by the diffraction grating.
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