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公开(公告)号：US6047014A
公开(公告)日：2000-04-04
申请号：US160352
申请日：1998-09-25
申请人： Hiroaki Hyuga , Yoji Okazaki
发明人： Hiroaki Hyuga , Yoji Okazaki
CPC分类号： H01S3/08036 , H01S3/08054 , H01S3/08072 , H01S3/09415
摘要： A solid state laser includes a resonator, a solid laser crystal disposed in the resonator, a pumping source for pumping the laser crystal, a pair of .lambda./4 plates which is disposed in the resonator with the laser crystal intervening therebetween and makes an oscillation beam of a twisted mode, and a polarization control element which is disposed in the resonator and sets the linear polarization of the solid state laser beam in a predetermined direction. The solid laser crystal is a birefringent crystal and an optical axis of the birefringence of the solid laser crystal is oriented in the direction of the linear polarization of the solid state laser beam set by the polarization control element.
摘要翻译： 固态激光器包括谐振器，设置在谐振器中的固体激光晶体，用于泵浦激光晶体的泵浦源，一对λ/ 4板，其设置在谐振器中，激光晶体介于其间并形成振荡光束 以及偏振控制元件，其设置在谐振器中并将固态激光束的线偏振设定在预定方向上。 固体激光晶体是双折射晶体，并且固体激光晶体的双折射的光轴在由偏振控制元件设置的固态激光束的线偏振方向上取向。
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公开(公告)号：US5588014A
公开(公告)日：1996-12-24
申请号：US417673
申请日：1995-04-06
申请人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
发明人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
CPC分类号： G02F1/37 , H01S3/109 , G02F1/3553 , G02F2001/3546
摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.
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公开(公告)号：US5424867A
公开(公告)日：1995-06-13
申请号：US198268
申请日：1994-02-18
申请人： Yasukazi Nihei , Akinori Harada , Yoji Okazaki
发明人： Yasukazi Nihei , Akinori Harada , Yoji Okazaki
CPC分类号： G02F1/3558
摘要： A method for fabricating an optical wavelength converter element which has a high optical damage threshold value, and is capable of achieving a high wavelength conversion efficiency without involving propagation losses caused by the reflection and scattering of a fundamental wave and a wavelength-converted wave. Domain reversals periodically arranged are formed on a substrate made of a LiNbO.sub.3 crystal which acts as a ferroelectric substance possessing a nonlinear optical effect. Thereafter, an ITO thin film made of a transparent electrically conductive material is deposited on a surface of the substrate extending in the direction of the arrangement of the domain reversals, that is, "y" and "z" surfaces.
摘要翻译： 一种具有高光损伤阈值的光波长转换元件的制造方法，能够实现高波长转换效率，而不会引起由基波和波长转换波的反射和散射引起的传播损耗。 周期性布置的畴反转形成在由作为具有非线性光学效应的铁电物质的LiNbO 3晶体制成的衬底上。 此后，由透明导电材料制成的ITO薄膜沉积在沿着域反转的布置方向延伸的基板的表面上，即“y”和“z”表面。
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公开(公告)号：US5315613A
公开(公告)日：1994-05-24
申请号：US70922
申请日：1993-06-04
CPC分类号： H01S3/09415 , H01S3/109 , H01S3/1611
摘要： A laser diode pumped solid laser comprises a solid laser medium, to which a rare earth metal has been added, a semiconductor laser, which produces a laser beam for pumping the solid laser medium, and a condensing lens, which causes the laser beam to converge in the solid laser medium. The condensing lens is located such that an optical axis of the condensing lens may deviate in the width direction of a semiconductor laser active layer from a center of irradiation area of the semiconductor laser. The amount of light returning to the semiconductor laser is thereby reduced markedly, and good stability in the output power of the laser diode pumped solid laser is obtained. A nonlinear optical material for converting the wavelength of a laser beam, which has been produced by the solid laser medium, into a different wavelength may be located in a solid laser resonator.
摘要翻译： 激光二极管泵浦固体激光器包括固体激光介质，添加有稀土金属，半导体激光器，其产生用于泵浦固体激光介质的激光束和聚光透镜，其使激光束会聚 在固体激光介质中。 聚光透镜的定位使得聚光透镜的光轴可以从半导体激光器有源层的宽度方向偏离半导体激光器的照射区域的中心。 从而显着降低了返回到半导体激光器的光量，并且获得了激光二极管泵浦固体激光器的输出功率的良好的稳定性。 用于将由固体激光介质产生的激光束的波长转换为不同波长的非线性光学材料可以位于固体激光谐振器中。
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公开(公告)号：US5315433A
公开(公告)日：1994-05-24
申请号：US843719
申请日：1992-02-28
申请人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
发明人： Yoji Okazaki , Chiaki Goto , Hiroaki Hyuga , Akinori Harada
CPC分类号： G02F1/37 , H01S3/109 , G02F1/3553 , G02F2001/3546
摘要： In an optical wavelength converting apparatus, a fundamental wave impinges upon a crystal of a nonlinear optical material, the type II of phase matching between the fundamental wave and its second harmonic is effected, and the second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. Two crystals constituted of the same material are employed as the crystal. The two crystals have equal lengths and are located in orientations such that corresponding optic axes may be shifted 90.degree. from each other. The optical wavelength converting apparatus yields the second harmonic having the maximum possible output power and yet can be kept small in size and low in cost.
摘要翻译： 在光波长变换装置中，基波对非线性光学材料的晶体入射，实现了基波和二次谐波之间的相位匹配型II，从而将基波的二次谐波从 光波长转换装置。 使用由相同材料构成的两个晶体作为晶体。 两个晶体具有相等的长度并且位于取向上，使得相应的光轴彼此相差90度。 光波长转换装置产生具有最大可能输出功率的二次谐波，并且可以保持尺寸小，成本低。
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公开(公告)号：US5278869A
公开(公告)日：1994-01-11
申请号：US921119
申请日：1992-07-29
申请人： Masayuki Naya , Yoji Okazaki
发明人： Masayuki Naya , Yoji Okazaki
CPC分类号： H01S5/14 , H01S3/082 , H01S3/083 , H01S3/109 , H01S5/0656 , H01S5/4006 , H01S5/5027
摘要： An optical wavelength converting apparatus comprises a semiconductor laser, which is capable of oscillating in a multiple longitudinal mode, and an external resonator for resonating a laser beam, which has been radiated out of the semiconductor laser and which serves as a fundamental wave. An optical wavelength converting device is located in an optical path of the fundamental wave, which has been resonated by the external resonator. A device feeds part of the fundamental wave, which has been resonated by the external resonator, back to the semiconductor laser. A wavelength-converted wave in a single longitudinal mode is thereby obtained, which wave has a high intensity and is stable.
摘要翻译： 光波长转换装置包括能够以多纵向模式振荡的半导体激光器和用于谐振已经被辐射出半导体激光器并用作基波的激光束的外部谐振器。 光波长转换装置位于由外部谐振器谐振的基波的光路中。 器件将已被外部谐振器谐振的基波的一部分馈送回半导体激光器。 从而获得单一纵模中的波长转换波，该波具有高强度并且稳定。
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公开(公告)号：US5260176A
公开(公告)日：1993-11-09
申请号：US817958
申请日：1992-01-08
申请人： Shigeaki Otani , Yoji Okazaki
发明人： Shigeaki Otani , Yoji Okazaki
CPC分类号： G03C1/08 , G03C7/30 , G03C7/39208 , Y10S430/145
摘要： A method of forming a color image on a silver halide color photographic light-sensitive material having at least one silver halide emulsion layer provided on a reflective support, which does not substantially contain silver iodide and which contains silver chlorobromide or silver chloride grains having a silver chloride content of at least 95 mol %, said grains containing at least one metal ion consisting of a group of ions of metals of Group VIII of the Periodic Table, transition metals of Group II of the Periodic Table, lead and thallium in an amount of at least 10.sup.-9 mol per mol of silver halide, comprising exposing said photographic material by means of a scanning exposure using an image signal formed by scanning an original image and thereafter continuously processing said photographic material with a color developer substantially not containing benzyl alcohol, wherein the amount of the replenisher to the developer is 200 ml or less per m.sup.2 of the photographic material processed thereby. The variation in the photographic properties of the material thus continuously processed, is greatly reduced.
摘要翻译： 在具有至少一个卤化银乳剂层的卤化银彩色照相感光材料上形成彩色图像的方法，所述卤化银乳剂层设置在基本上不含碘化银的反射载体上，并且含有具有银的氯化银或氯化银颗粒 氯化物含量至少为95摩尔％，所述晶粒含有至少一种金属离子，其由元素周期表第VIII族金属离子组成，元素周期表第二组的过渡金属，铅和铊的量为 每摩尔卤化银至少10-9摩尔，包括通过使用通过扫描原始图像形成的图像信号的扫描曝光曝光所述照相材料，然后用基本上不含苯甲醇的显色剂连续处理所述照相材料， 其中对显影剂的补充剂的量为每毫升加工的照相材料为200毫升或更少 reby。 因此连续处理的材料的照相特性的变化大大降低。
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公开(公告)号：US5243611A
公开(公告)日：1993-09-07
申请号：US878466
申请日：1992-05-05
申请人： Hiroaki Hyuga , Yoji Okazaki
发明人： Hiroaki Hyuga , Yoji Okazaki
CPC分类号： H01S3/109 , G02F1/37 , G02F1/3553 , G02F2001/3542 , H01S3/1611 , H01S3/1673
摘要： In an optical wavelength converting apparatus, a laser beam serving as a fundamental wave and having been obtained by pumping a solid laser medium is caused to impinge upon a nonlinear optical crystal, and the type II of phase matching between the fundamental wave and its second harmonic is effected. The second harmonic of the fundamental wave is thereby radiated out of the optical wavelength converting apparatus. A solid laser medium, which produces a linearly polarized fundamental wave in two longitudinal modes, is employed as the solid laser medium. A device for adjusting a difference in phase of the fundamental wave due to the nonlinear optical crystal and a device for adjusting the temperatures of the nonlinear optical crystal and a resonator, such that the temperatures may be kept at predetermined values, are provided in order to work such that two directions of polarization of the fundamental wave may intersect approximately perpendicularly to each other and may respectively incline approximately 45.degree. with respect to an optic axis of the nonlinear optical crystal. The second harmonic having stable output power and free of any noise is thus obtained.
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公开(公告)号：US5231643A
公开(公告)日：1993-07-27
申请号：US883196
申请日：1992-05-14
申请人： Masayuki Naya , Yoji Okazaki
发明人： Masayuki Naya , Yoji Okazaki
摘要： There is disclosed an optical frequency converter of a bulk resonator structure comprising a ring resonator or V-shaped resonator made of a nonlinear optical crystal. The converter is equipped with a means for returning a laser light emitted by a semiconductor laser resonating inside the resonator to the semiconductor laser. The ring resonator or V-shaped resonator is made small in size and compact. The converter is insusceptible to vibration and needs no adjustment. Returning laser light is produced at less locations. The loss of the output light inside the resonator is reduced. The second harmonic is generated at a high efficiency. Multiple reflection is produced inside the resonator to further enhance the efficiency of the generation of the second harmonic of the laser radiation. Also, the phase of the radiation can be made uniform. The optical density can be increased.
摘要翻译： 公开了一种体谐振器结构的光频变换器，其包括由非线性光学晶体制成的环形谐振器或V形谐振器。 转换器配备有用于将谐振器内谐振的半导体激光器发射的激光返回到半导体激光器的装置。 环形谐振器或V形谐振器的尺寸小巧且小巧。 转换器不易振动，无需调整。 在较少的位置产生返回的激光。 谐振器内的输出光的损失减小。 二次谐波以高效率产生。 在谐振器内产生多重反射，以进一步提高激光辐射的二次谐波的产生效率。 此外，可以使辐射的相位均匀。 可以增加光密度。
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150.发明授权Organic nonlinear optical material and method of converting the wavelength of light using said material 失效有机非线性光学材料和使用所述材料转换光的波长的方法
公开(公告)号：US5229038A
公开(公告)日：1993-07-20
申请号：US757356
申请日：1991-09-10
申请人： Nobuhiko Uchino , Masaki Okazaki , Koji Matsuo , Yoji Okazaki
发明人： Nobuhiko Uchino , Masaki Okazaki , Koji Matsuo , Yoji Okazaki
IPC分类号： G02F1/35 , C07C251/76 , C07C251/86 , C07C255/61 , C07D213/53 , C09K9/02 , G02F1/355 , G02F1/361
CPC分类号： C07D213/53 , C07C251/76 , C07C251/86 , C07C255/61 , G02F1/3611 , G02F1/3612
摘要： A nonlinear optical material comprising a compound represented by the following general formula (I): ##STR1## wherein R and R' are each an alkyl group, an aryl group, an aralkyl group or a hetero ring, and a method of converting the wavelength of laser light using the organic nonlinear optical material.
摘要翻译： 一种非线性光学材料，其包含由以下通式（I）表示的化合物：其中R和R'各自为烷基，芳基，芳烷基或杂环，和 使用有机非线性光学材料转换激光的波长。
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