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公开(公告)号：US20080316590A1
公开(公告)日：2008-12-25
申请号：US12142428
申请日：2008-06-19
IPC分类号： G02F1/377
CPC分类号： G02F1/3775 , G02F2001/3503 , G02F2001/3507 , G02F2201/16
摘要： A short wavelength light source is provided with a fundamental wave light source for generating a fundamental wave, and a plurality of wavelength conversion elements made of nonlinear optical crystals having periodic polarization-inversion structures and adapted to convert a part of the fundamental wave into a second harmonic, and the nonlinear optical crystals of the plurality of wavelength conversion elements are different in material or composition. By converting the fundamental wave from the fundamental wave light source by the plurality of wavelength conversion elements, the generation of a thermal lens effect caused by light absorption can be suppressed to improve a high output resistance.
摘要翻译： 短波长光源设置有用于产生基波的基波光源，以及由具有周期性极化反转结构的非线性光学晶体制成的多个波长转换元件，并且适于将基波的一部分转换成第二 谐波，并且多个波长转换元件的非线性光学晶体的材料或组成不同。 通过由多个波长转换元件转换基波光源的基波，可以抑制由光吸收引起的热透镜效应的产生，从而提高高的输出电阻。
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公开(公告)号：US07738162B2
公开(公告)日：2010-06-15
申请号：US12142428
申请日：2008-06-19
IPC分类号： G02F1/35
CPC分类号： G02F1/3775 , G02F2001/3503 , G02F2001/3507 , G02F2201/16
摘要： A short wavelength light source is provided with a fundamental wave light source for generating a fundamental wave, and a plurality of wavelength conversion elements made of nonlinear optical crystals having periodic polarization-inversion structures and adapted to convert a part of the fundamental wave into a second harmonic, and the nonlinear optical crystals of the plurality of wavelength conversion elements are different in material or composition. By converting the fundamental wave from the fundamental wave light source by the plurality of wavelength conversion elements, the generation of a thermal lens effect caused by light absorption can be suppressed to improve a high output resistance.
摘要翻译： 短波长光源设置有用于产生基波的基波光源，以及由具有周期性极化反转结构的非线性光学晶体制成的多个波长转换元件，并且适于将基波的一部分转换成第二 谐波，并且多个波长转换元件的非线性光学晶体的材料或组成不同。 通过由多个波长转换元件转换基波光源的基波，可以抑制由光吸收引起的热透镜效应的产生，从而提高高的输出电阻。
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公开(公告)号：US20100085631A1
公开(公告)日：2010-04-08
申请号：US12532184
申请日：2008-03-19
申请人： Koichi Kusukame , Kiminori Mizuuchi , Tetsuro Mizushima , Shinichi Shikii , Hiroyuki Furuya , Kazuhisa Yamamoto , Shinichi Kadowaki
发明人： Koichi Kusukame , Kiminori Mizuuchi , Tetsuro Mizushima , Shinichi Shikii , Hiroyuki Furuya , Kazuhisa Yamamoto , Shinichi Kadowaki
CPC分类号： G02F1/3525 , G02F1/37 , G02F2001/3503 , H04N9/3161
摘要： Upon obtaining green light as wavelength converted light by causing infrared light to be incident on a wavelength conversion element, the absorption of the green light occurs due to the generation of ultraviolet light as sum-frequency light of the infrared light and the green light in the wavelength conversion element and the destruction of a crystal composing the wavelength conversion element occurs due to heat generated at this time. In a laser wavelength converter of the present invention, a condensed position of the infrared light in the wavelength conversion element is deviated from a position assumed to be optimal when the influence of the generated heat is ignored. Consequently, crystal destruction is suppressed, a high-efficiency wavelength conversion is enabled and high-output wavelength converted light exceeding several watts, which was difficult to attain in conventional wavelength conversion elements, is attained.
摘要翻译： 当通过使红外光入射到波长转换元件上获得作为波长转换光的绿光时，由于产生紫外光而发生绿光的吸收，作为红外光和绿色光的和频光 波长转换元件，并且由于此时产生的热量而产生构成波长转换元件的晶体的破坏。 在本发明的激光波长转换器中，当忽略发生的热的影响时，波长转换元件中的红外光的聚光位置被假定为最佳的位置偏离。 因此，可以抑制晶体破坏，能够实现高效率的波长转换，并且实现了在常规的波长转换元件中难以获得的超过几瓦特的高输出波长转换的光。
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公开(公告)号：US08571076B2
公开(公告)日：2013-10-29
申请号：US12411636
申请日：2009-03-26
申请人： Koichi Kusukame , Hiroyuki Furuya , Kiminori Mizuuchi , Tomoya Sugita , Akihiro Morikawa , Nobuyuki Horikawa , Kazuhisa Yamamoto , Shinichi Kadowaki
发明人： Koichi Kusukame , Hiroyuki Furuya , Kiminori Mizuuchi , Tomoya Sugita , Akihiro Morikawa , Nobuyuki Horikawa , Kazuhisa Yamamoto , Shinichi Kadowaki
IPC分类号： H01S3/10
CPC分类号： H01S3/109 , G02F1/0305 , G02F1/3775 , G02F2203/60 , H01S3/09415
摘要： A laser light source includes a fundamental laser generator that generates a fundamental laser light, a wavelength conversion element that is made of a ferroelectric crystal with a periodically poled structure and converts the fundamental laser light to a laser light having a different wavelength, a holding member that holds at least a part of an element surface of the wavelength conversion element that crosses a polarization direction of the periodically poled structure, and an insulation layer that is provided between the holding member and the element surface. Electric resistivity of the insulation layer is 1×108 Ω·cm or higher.
摘要翻译： 激光光源包括产生基本激光的基波激光发生器，具有周期性极化结构的铁电晶体的波长转换元件，并将基波激光转换为具有不同波长的激光，保持部件 其保持所述波长转换元件的与所述周期性极化结构的偏振方向交叉的元件表面的至少一部分，以及设置在所述保持部件和所述元件表面之间的绝缘层。 绝缘层的电阻率为1×108Ω·cm以上。
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公开(公告)号：US08144391B2
公开(公告)日：2012-03-27
申请号：US12676042
申请日：2008-08-27
CPC分类号： G02F1/3551 , G02F1/3558 , G02F2001/3546
摘要： A wavelength converter is provided with an infrared light source (1) for emitting a fundamental wave having a wavelength of 2000 nm or shorter, a wavelength conversion element (3) composed of a nonlinear optical crystal having a periodical polarization reversal structure and adapted to convert a fundamental wave emitted from the infrared light source (1) into a harmonic wave, and a heater (4) for heating the wavelength conversion element (3). The period of the polarization reversal structure is designed so that a quasi phase matching temperature of the fundamental wave and the harmonic wave is 40° C. or higher. The heater (4) heats the wavelength conversion element (3) to a temperature at which quasi phase matching is established, and the nonlinear optical crystal contains a lithium niobate or lithium tantalate including at least any one of additives Mg, In, Zn and Sc as a main component. Thus, optical damage can be suppressed and visible light absorption attributed to ultraviolet light can be reduced.
摘要翻译： 波长转换器设置有用于发射波长为2000nm以下的基波的红外光源（1），由具有周期性极化反转结构的非线性光学晶体构成的波长转换元件（3），其适于转换 从红外光源（1）发射的谐波的基波和用于加热波长转换元件（3）的加热器（4）。 极化反转结构的周期被设计成使得基波和谐波的准相位匹配温度为40℃以上。 加热器（4）将波长转换元件（3）加热到建立准相位匹配的温度，非线性光学晶体包含铌酸锂或钽酸锂，其包括添加剂Mg，In，Zn和Sc中的至少任一种 作为主要组成部分。 因此，可以抑制光学损伤，并且可以降低归因于紫外线的可见光吸收。
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公开(公告)号：US08125703B2
公开(公告)日：2012-02-28
申请号：US12532184
申请日：2008-03-19
申请人： Koichi Kusukame , Kiminori Mizuuchi , Tetsuro Mizushima , Shinichi Shikii , Hiroyuki Furuya , Kazuhisa Yamamoto , Shinichi Kadowaki
发明人： Koichi Kusukame , Kiminori Mizuuchi , Tetsuro Mizushima , Shinichi Shikii , Hiroyuki Furuya , Kazuhisa Yamamoto , Shinichi Kadowaki
CPC分类号： G02F1/3525 , G02F1/37 , G02F2001/3503 , H04N9/3161
摘要： Upon obtaining green light as wavelength converted light by causing infrared light to be incident on a wavelength conversion element, the absorption of the green light occurs due to the generation of ultraviolet light as sum-frequency light of the infrared light and the green light in the wavelength conversion element and the destruction of a crystal composing the wavelength conversion element occurs due to heat generated at this time. In a laser wavelength converter of the present invention, a condensed position of the infrared light in the wavelength conversion element is deviated from a position assumed to be optimal when the influence of the generated heat is ignored. Consequently, crystal destruction is suppressed, a high-efficiency wavelength conversion is enabled and high-output wavelength converted light exceeding several watts, which was difficult to attain in conventional wavelength conversion elements, is attained.
摘要翻译： 当通过使红外光入射到波长转换元件上获得作为波长转换光的绿光时，由于产生紫外光而发生绿光的吸收，作为红外光和绿色光的和频光 波长转换元件，并且由于此时产生的热量而产生构成波长转换元件的晶体的破坏。 在本发明的激光波长转换器中，当忽略发生的热的影响时，波长转换元件中的红外光的聚光位置被假定为最佳的位置偏离。 因此，可以抑制晶体破坏，能够实现高效率的波长转换，并且实现了在常规的波长转换元件中难以获得的超过几瓦特的高输出波长转换的光。
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7.发明授权Wavelength conversion laser, image display device and laser processing device 有权波长转换激光，图像显示装置和激光加工装置公开(公告)号：US08014429B2
公开(公告)日：2011-09-06
申请号：US12532213
申请日：2009-01-20
申请人： Tetsuro Mizushima , Hiroyuki Furuya , Shinichi Shikii , Koichi Kusukame , Nobuyuki Horikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
发明人： Tetsuro Mizushima , Hiroyuki Furuya , Shinichi Shikii , Koichi Kusukame , Nobuyuki Horikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
CPC分类号： G02F1/37 , G02B6/0028 , G02B6/0078 , G02F1/0147 , G02F1/29 , G02F2001/3503 , G02F2001/3546 , G02F2001/372 , G02F2201/17 , G02F2201/34 , G02F2203/05 , H01S5/0092 , H01S5/0687 , H04N9/3161
摘要： A wavelength conversion laser is provided with a pair of fundamental wave reflecting surfaces for reflecting a fundamental wave to define a plurality of fundamental wave paths passing a wavelength conversion element at different angles, and a control unit for controlling wavelength conversion efficiencies so that the wavelength conversion efficiency on a specific one of the plurality of fundamental wave paths extending in different directions between the pair of fundamental wave reflecting surfaces is highest.
摘要翻译： 波长转换激光器设置有一对基波反射表面，用于反射基波以限定以不同角度通过波长转换元件的多个基本波径;以及控制单元，用于控制波长转换效率，使得波长转换 在一对基波反射面之间沿不同方向延伸的多个基波路径中的特定一个基波波长上的效率最高。
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公开(公告)号：US20100195191A1
公开(公告)日：2010-08-05
申请号：US12676042
申请日：2008-08-27
CPC分类号： G02F1/3551 , G02F1/3558 , G02F2001/3546
摘要： A wavelength converter is provided with an infrared light source (1) for emitting a fundamental wave having a wavelength of 2000 nm or shorter, a wavelength conversion element (3) composed of a nonlinear optical crystal having a periodical polarization reversal structure and adapted to convert a fundamental wave emitted from the infrared light source (1) into a harmonic wave, and a heater (4) for heating the wavelength conversion element (3). The period of the polarization reversal structure is designed so that a quasi phase matching temperature of the fundamental wave and the harmonic wave is 40° C. or higher. The heater (4) heats the wavelength conversion element (3) to a temperature at which quasi phase matching is established, and the nonlinear optical crystal contains a lithium niobate or lithium tantalate including at least any one of additives Mg, In, Zn and Sc as a main component. Thus, optical damage can be suppressed and visible light absorption attributed to ultraviolet light can be reduced.
摘要翻译： 波长转换器设置有用于发射波长为2000nm以下的基波的红外光源（1），由具有周期性极化反转结构的非线性光学晶体构成的波长转换元件（3），其适于转换 从红外光源（1）发射的谐波的基波和用于加热波长转换元件（3）的加热器（4）。 极化反转结构的周期被设计成使得基波和谐波的准相位匹配温度为40℃以上。 加热器（4）将波长转换元件（3）加热到建立准相位匹配的温度，非线性光学晶体包含铌酸锂或钽酸锂，其包括添加剂Mg，In，Zn和Sc中的至少任一种 作为主要组成部分。 因此，可以抑制光学损伤，并且可以降低归因于紫外线的可见光吸收。
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9.发明授权公开(公告)号：US08068274B2
公开(公告)日：2011-11-29
申请号：US12241525
申请日：2008-09-30
申请人： Tetsuro Mizushima , Hiroyuki Furuya , Koichi Kusukame , Kiminori Mizuuchi , Kazuhisa Yamamoto , Nobuyuki Horikawa , Shinichi Shikii , Tatsuo Itoh
发明人： Tetsuro Mizushima , Hiroyuki Furuya , Koichi Kusukame , Kiminori Mizuuchi , Kazuhisa Yamamoto , Nobuyuki Horikawa , Shinichi Shikii , Tatsuo Itoh
CPC分类号： H01S3/005 , G02F1/353 , G02F2001/3542 , H01S3/0092
摘要： A wavelength conversion laser device includes a laser light source which emits a laser beam, two reflective surfaces which reflect therefrom a laser beam, a wavelength converter provided between the two reflective surfaces, which converts a laser beam into a wavelength-converted laser beam, and condensing optics which condense the laser beams to be injected between the two reflective surfaces, wherein at least one of the two reflective surfaces has a curvature for reflecting a laser beam to be re-injected into the wavelength converter between the two reflective surfaces repeatedly while forming multi paths of laser beams injected into the wavelength converter at different incident angles, and the condensing optics are arranged to disperse beam waists of the laser beams in the wavelength converter, which reciprocate between the two reflective surfaces.
摘要翻译： 波长转换激光器件包括发射激光束的激光源，从其反射激光束的两个反射表面，设置在两个反射表面之间的波长转换器，其将激光束转换成波长转换的激光束;以及 聚光光学器件，其将要注入的激光束聚集在两个反射表面之间，其中两个反射表面中的至少一个具有用于反射在两个反射表面之间重新注入到波长转换器中的激光束的曲率，同时形成 以不同的入射角注入到波长转换器中的激光束的多路径，以及聚光光学器件被布置成分散波长转换器中的激光束的波束束，波长转换器在两个反射表面之间往复运动。
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公开(公告)号：US08767783B2
公开(公告)日：2014-07-01
申请号：US12596577
申请日：2009-02-18
申请人： Koichi Kusukame , Tetsuro Mizushima , Kazuhisa Yamamoto , Hiroyuki Furuya , Shinichi Kadowaki , Kiminori Mizuuchi
发明人： Koichi Kusukame , Tetsuro Mizushima , Kazuhisa Yamamoto , Hiroyuki Furuya , Shinichi Kadowaki , Kiminori Mizuuchi
IPC分类号： H01S3/10
CPC分类号： G03B21/2033 , G02B27/48 , G03B21/2053 , G03B21/208 , G03B33/06
摘要： A light source device is provided with a coherent light source for emitting the coherent light, and a pattern changer for changing an interference pattern of the coherent light on a surface of the illumination object. The pattern changer includes a photorefractive crystal which is arranged between the coherent light source and the illumination object and on an optical path of the coherent light and exhibits a photorefractive effect, and a changer for changing at least one of a light intensity distribution, a polarization direction, a wavelength and an intensity of coherent light incident on the photorefractive crystal. The illumination object is illuminated with the coherent light.
摘要翻译： 光源装置设置有用于发射相干光的相干光源，以及用于改变照明对象表面上的相干光的干涉图案的图案改变器。 图案转换器包括光折射晶体，其布置在相干光源和照明对象之间以及相干光的光路上并呈现光折射效应;以及变换器，用于改变光强度分布，偏振 方向，入射到光折射晶体上的相干光的波长和强度。 照明物体用相干光照亮。
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