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31. 发明授权

US06894712B2 Exposure head, exposure apparatus, and application thereof 有权
公开(公告)号：US06894712B2
公开(公告)日：2005-05-17
申请号：US10409686
申请日：2003-04-09
申请人： Hiromi Ishikawa , Kazuhiko Nagano , Yoji Okazaki , Takeshi Fujii , Hiromitsu Yamakawa
发明人： Hiromi Ishikawa , Kazuhiko Nagano , Yoji Okazaki , Takeshi Fujii , Hiromitsu Yamakawa
IPC分类号： B23K26/06 , B29C67/00 , B41J2/447 , B41J2/465 , B41J2/47 , D06L3/04 , D06M10/00 , G02B26/08 , G03F7/20 , H04N1/12 , H04N1/191
CPC分类号： B41J2/451 , B23K26/0604 , B23K26/066 , B29C64/135 , B29C64/153 , B33Y30/00 , B41J2/45 , B41J2/465 , B41J2/47 , D06L4/50 , D06M10/005 , G02B26/0841 , G03F7/7005 , G03F7/70291 , H04N1/12 , H04N1/191 , H04N1/1916
摘要： In an exposure apparatus of the invention, for a spatial light modulator, each of a plurality of pixel portions fewer than the total number of the pixel portions is controlled with a control signal generated according to exposure information. Namely, a part of the pixel portions is controlled without controlling a whole of the pixel portions on the substrate. Thus, the number of pixels in the pixel portions is decreased, and transfer time of the control signal becomes short. This enables modulation speed of the laser beam to be increased and the high-speed exposure to be performed. An incorporated laser light source, in which the laser beams are incorporated and struck on the optical fiber, is preferable to the laser device. By adopting the incorporated laser light source, high brightness and high output can be obtained, and it is preferable to the exposure of the spatial light modulator. Since the fiber array is obtained with few optical fibers, it is low cost. Since the number of optical fibers is few, the light-emitting region is further decreased when the optical fibers are arrayed.

32. 发明申请

US20050047470A1 Laser-diode-excited laser apparatus, fiber laser apparatus, and fiber laser amplifier in which laser medium doped with one of Ho3+, Sm3+, Eu3+, Dy3+, Er3+, and Tb3+ is excited with GaN-based compound laser diode 失效
公开(公告)号：US20050047470A1
公开(公告)日：2005-03-03
申请号：US10952768
申请日：2004-09-30
申请人： Hisashi Ohtsuka , Yoji Okazaki , Takayuki Katoh
发明人： Hisashi Ohtsuka , Yoji Okazaki , Takayuki Katoh
IPC分类号： H01S3/02 , H01S3/06 , H01S3/067 , H01S3/0941 , H01S3/109 , H01S3/16 , H01S5/323 , H01S3/091
CPC分类号： H01S3/067 , H01S3/025 , H01S3/0405 , H01S3/042 , H01S3/0602 , H01S3/09415 , H01S3/109 , H01S3/1603 , H01S3/161 , H01S3/1615 , H01S5/32341 , H01S2302/00
摘要： A solid-state laser crystal constituting a laser-diode-excited solid-state laser apparatus or an optical fiber constituting a fiber laser apparatus or fiber laser amplifier is doped with one of Ho3+, Sm3+, Eu3+, Dy3+, Er3+, and Tb3+ so that a laser beam is emitted from the solid-state laser crystal or the optical fiber, or incident light of the fiber laser amplifier is amplified, by one of the transitions from 5S2 to 5I7, from 5S2 to 5I8, from 4G5/2 to 6H5/2, from 4G5/2 to 6H7/2, from 4F3/2 to 6H11/2, from 5D0 to 7F2, from 4F9/2 to 6H13/2, from 4F9/2 to 6H11/2, from 4S3/2 to 4I15/2, from 2H9/2 to 4I13/2, and from 5D4 to 7F5. The above solid-state laser crystal or optical fiber is excited with a GaN-based compound laser diode.

33. 发明申请

US20050047469A1 Laser-diode-excited laser apparatus, fiber laser apparatus, and fiber laser amplifier in which laser medium doped with one of Ho3+, Sm3+, Eu3+, Dy3+, Er3+, and Tb3+ is excited with GaN-based compound laser diode 失效
标题翻译：激光二极管激光装置，光纤激光装置和光纤激光放大器，其中掺杂有Ho3 +，Sm3 +，Eu3 +，Dy3 +，Er3 +和Tb3 +之一的激光介质被GaN基复合激光二极管
公开(公告)号：US20050047469A1
公开(公告)日：2005-03-03
申请号：US10952760
申请日：2004-09-30
申请人： Hisashi Ohtsuka , Yoji Okazaki , Takayuki Katoh
发明人： Hisashi Ohtsuka , Yoji Okazaki , Takayuki Katoh
IPC分类号： H01S3/02 , H01S3/06 , H01S3/067 , H01S3/0941 , H01S3/109 , H01S3/16 , H01S5/323 , H01S3/091
CPC分类号： H01S3/067 , H01S3/025 , H01S3/0405 , H01S3/042 , H01S3/0602 , H01S3/09415 , H01S3/109 , H01S3/1603 , H01S3/161 , H01S3/1615 , H01S5/32341 , H01S2302/00
摘要： A solid-state laser crystal constituting a laser-diode-excited solid-state laser apparatus or an optical fiber constituting a fiber laser apparatus or fiber laser amplifier is doped with one of Ho3+, Sm3+, Eu3+, Dy3+, Er3+, and Tb3+ so that a laser beam is emitted from the solid-state laser crystal or the optical fiber, or incident light of the fiber laser amplifier is amplified, by one of the transitions from 5S2 to 5I7, from 5S2 to 5I8, from 4G5/2 to 6H5/2, from 4G5/2 to 6H7/2, from 4F3/2 to 6H11/2, from 5D0 to 7F2, from 4F9/2 to 6H13/2, from 4F9/2 to 6H11/2, from 4S3/2 to 4I15/2, from 2H9/2 to 4I13/2, and from 5D4 to 7F5. The above solid-state laser crystal or optical fiber is excited with a GaN-based compound laser diode.
摘要翻译：构成激光二极管激光固体激光装置的固态激光晶体或构成光纤激光装置或光纤激光放大器的光纤掺杂有Ho 3+，Sm 3+， 3+，Dy 3+，Er 3+和Tb 3+，使得激光束从固态激光晶体或光纤发射，或者光纤激光放大器的入射光为通过从<5> S2至<5> I7的从5S→5J8→4G5 / 2→6H5 / 2→4G5 / 2〜6 H7 / 2，从F3 / 2〜6H11 / 2，从5℃到0℃的F2，从F9 / 2到6的H13 / 2，从4/3> 3/1> 1/2，从4/3> 911/2到<6> H11 / 2，从S3 / D4至<7> F5。上述固态激光晶体或光纤被GaN基复合激光二极管激发。

34. 发明授权

US06795475B1 Solid-state laser apparatus excited by laser light from semiconductor laser unit having increased resonator length 失效
标题翻译：由具有增加的谐振器长度的半导体激光器单元的激光激发的固态激光装置
公开(公告)号：US06795475B1
公开(公告)日：2004-09-21
申请号：US09552540
申请日：2000-04-19
申请人： Hisashi Ohtsuka , Yoji Okazaki
发明人： Hisashi Ohtsuka , Yoji Okazaki
IPC分类号： H01S310
CPC分类号： H01S3/1312 , H01S3/08059 , H01S3/08072 , H01S3/09415 , H01S3/109 , H01S3/1305 , H01S3/139 , H01S3/1611 , H01S3/1653
摘要： A semiconductor-laser-excited solid-state laser apparatus includes a solid-state laser element and a semiconductor laser unit including a resonator. The solid-state laser element is excited by light emitted from the semiconductor laser unit, and emits laser light. The resonator length in the semiconductor laser unit is arranged to be at least 0.8 mm, so as to reduce an amount of wavelength shift in light emitted from the semiconductor laser unit, and achieve a stable, high-power laser output from the semiconductor-laser-excited solid-state laser apparatus.
摘要翻译：半导体激光激光固态激光装置包括固体激光元件和包括谐振器的半导体激光器单元。固体激光元件被从半导体激光器单元发射的光激发，并发射激光。半导体激光器单元中的谐振器长度被布置为至少0.8mm，以便减少从半导体激光器单元发射的光的波长偏移量，并且实现来自半导体激光器的稳定的高功率激光输出激光固态激光装置。

35. 发明授权

US06717106B2 Laser sintering apparatus 失效
标题翻译：激光烧结设备
公开(公告)号：US06717106B2
公开(公告)日：2004-04-06
申请号：US10236930
申请日：2002-09-09
申请人： Kazuhiko Nagano , Yoji Okazaki
发明人： Kazuhiko Nagano , Yoji Okazaki
IPC分类号： B23K2602
CPC分类号： B23K26/0665 , B23K26/0604 , B23K26/0613 , B23K26/0643 , B23K26/0648 , B29C64/153 , B33Y30/00 , H01S3/067 , H01S3/0941 , H01S3/109 , H01S3/1613 , H01S3/1653 , H01S5/32341
摘要： A laser sintering apparatus for realizing high-speed and high-precision forming. When a first position of an exposure unit is decided by an XY-positioning mechanism, a micromirror of a DMD is turned on and off in accordance with image data in a region corresponding to the first position and a laser beam in a predetermined region including ultraviolet is supplied to the DMD and modulated for each pixel in accordance with image data. A laser beam reflected in the direction of a reflection mirror is reflected therefrom in the direction of a surface of a powdered body. A region having a predetermined area on the surface of the powdered body is exposed by the laser beam, and the exposed portion is thereby cured. Similarly, by repeating movement of and exposure with the exposure unit, the entire surface of the powdered body is exposed.
摘要翻译：一种用于实现高速高精度成形的激光烧结装置。当通过XY定位机构确定曝光单元的第一位置时，根据包括紫外线的预定区域中的与第一位置相对应的区域和激光束的图像数据，DMD的微镜被打开和关闭被提供给DMD并且根据图像数据针对每个像素进行调制。在反射镜的方向上反射的激光束从粉末体的表面的方向反射。在该粉体的表面上具有规定面积的区域被激光束曝光，露出部由此固化。类似地，通过重复曝光单元的移动和曝光，粉末体的整个表面被暴露。

36. 发明授权

US06647029B1 Variable-wavelength semiconductor laser device controlled by strength of electric field applied to wavelength selection element 失效
标题翻译：由波长选择元件施加的电场强度控制的可变波长半导体激光器件
公开(公告)号：US06647029B1
公开(公告)日：2003-11-11
申请号：US09521197
申请日：2000-03-07
申请人： Yoji Okazaki
发明人： Yoji Okazaki
IPC分类号： H01S310
CPC分类号： H01S5/146 , H01S5/1064 , H01S5/147
摘要： A variable-wavelength semiconductor laser device containing a tapered-stripe semiconductor laser amplifier and a wavelength selection unit. Light emitted from a back end surface of the tapered-stripe semiconductor laser amplifier is incident on the wavelength selection unit. The wavelength selection unit selects a portion of the light having a specific wavelength, and returns the selected portion to the tapered-stripe semiconductor laser amplifier. The tapered-stripe semiconductor laser amplifier amplifies the returned portion of the light to emit the amplified light from a front-end surface of the tapered-stripe semiconductor laser amplifier. The wavelength selection unit is constructed so that the specific wavelength can be changed according to strength of an electric field applied to the wavelength selection unit. An electric field applying unit is provided for applying the electric field to the wavelength selection unit. The wavelength selection unit may contain a fiber grating, a birefringent filter, or an optical waveguide element having therein a reflection grating. In this case, the specific wavelength selected by the wavelength selection unit can be changed by changing a refraction index and/or an effective pitch of the grating, which can be changed by adjusting the strength of the electric field.
摘要翻译：一种可变波长半导体激光装置，包括锥形半导体激光放大器和波长选择单元。从锥形条状半导体激光放大器的后端表面发射的光入射到波长选择单元。波长选择单元选择具有特定波长的光的一部分，并将所选择的部分返回到锥形半导体激光放大器。锥形半导体半导体激光放大器放大反射部分的光以从锥形半导体激光放大器的前端表面发射放大的光。波长选择单元被构造成可以根据施加到波长选择单元的电场的强度来改变特定波长。提供电场施加单元以将电场施加到波长选择单元。波长选择单元可以包含光纤光栅，双折射滤光器或其中具有反射光栅的光波导元件。在这种情况下，可以通过改变光栅的折射率和/或有效间距来改变由波长选择单元选择的特定波长，这可以通过调整电场的强度来改变。

37. 发明授权

US06584129B2 Single-longitudinal-mode solid laser 失效
公开(公告)号：US06584129B2
公开(公告)日：2003-06-24
申请号：US09987051
申请日：2001-11-13
申请人： Hiroaki Hyuga , Yoji Okazaki
发明人： Hiroaki Hyuga , Yoji Okazaki
IPC分类号： H01S314
CPC分类号： H01S3/1062 , H01S3/0405 , H01S3/109 , H01S3/1673
摘要： A solid laser produces a laser beam of a 1 &mgr;m wavelength band with an Nd-doped solid laser medium. An oscillation mode is brought to a single longitudinal mode with a Fabry-Pérot etalon located within a resonator. An etalon thickness, an etalon reflectivity, an etalon inclination, and a resonator longitudinal mode interval satisfy the relationships, 1.2%≦RN≦15% and 0.5°≦&thgr;≦2.0°, in which RN represents an effective reflectivity of the etalon with respect to wavelengths &lgr;=&lgr;0±&Dgr;&lgr;c deviating by a resonator longitudinal mode interval &Dgr;&lgr;c from a resonance wavelength &lgr;0 of the etalon, and &thgr; represents an inclination of an etalon optical axis with respect to a resonator optical axis.

38. 发明授权

US6137815A Semiconductor laser 失效
标题翻译：半导体激光器
公开(公告)号：US6137815A
公开(公告)日：2000-10-24
申请号：US993178
申请日：1997-12-18
申请人： Masanori Sasao , Yoji Okazaki
发明人： Masanori Sasao , Yoji Okazaki
IPC分类号： H01S5/00 , H01S5/022 , H01S5/024 , H01S3/04
CPC分类号： H01S5/02415 , H01S5/02208 , H01S5/02276 , H01S5/02476 , H01S5/02492
摘要： A semiconductor laser includes a laser diode chip, a heat radiating plate on which the laser diode chip is mounted and a Peltier element which is integrated with the heat radiating plate. The heat radiating plate is formed of metal whose thermal conductivity is not lower than 230 W/mK.
摘要翻译：半导体激光器包括激光二极管芯片，安装有激光二极管芯片的散热板和与散热板一体化的珀耳帖元件。散热板由导热率不低于230W / mK的金属形成。

39. 发明授权

US6125132A Laser diode pumped solid state laser, fiber laser and fiber amplifier 失效
标题翻译：激光二极管泵浦固态激光器，光纤激光器和光纤放大器
公开(公告)号：US6125132A
公开(公告)日：2000-09-26
申请号：US66910
申请日：1998-04-28
申请人： Yoji Okazaki
发明人： Yoji Okazaki
IPC分类号： H01S3/067 , H01S3/0941 , H01S3/16 , H01S3/091
CPC分类号： H01S3/067 , H01S3/09415 , H01S3/1613
摘要： A solid laser crystal added with Pr.sup.3+ is pumped by a InGaN laser diode to generated a laser beam. A fiber having a core added with Pr.sup.3+ is pumped by a GaN laser diode to generated a laser beam. A fiber having a core added with Pr.sub.3+ is pumped by a GaN laser diode to generate fluorescence and incident light in the wavelength range of the fluorescence is amplified by energy of the fluorescence.
摘要翻译：添加有Pr3 +的固体激光晶体被InGaN激光二极管泵浦以产生激光束。具有添加有Pr3 +的核的光纤被GaN激光二极管泵浦以产生激光束。具有添加有Pr3 +的核的光纤被GaN激光二极管泵浦以产生荧光，并且在荧光的波长范围内的入射光被荧光的能量放大。

40. 发明授权

US6058126A Laser-diode-pumped solid state laser and radiation image read-out system 失效
标题翻译：激光二极管泵浦固态激光器和放射线图像读出系统
公开(公告)号：US6058126A
公开(公告)日：2000-05-02
申请号：US109053
申请日：1998-07-02
申请人： Hiromi Ishikawa , Yoji Okazaki , Hisashi Ohtsuka
发明人： Hiromi Ishikawa , Yoji Okazaki , Hisashi Ohtsuka
IPC分类号： G03B42/02 , H01S3/094 , H01S3/109 , H01S3/131 , H01S3/091
CPC分类号： H01S3/109 , H01S3/1312
摘要： In a laser-diode-pumped solid state laser, a solid laser crystal is pumped by a pumping laser beam emitted from a laser diode and a harmonic of light emitted from the pumped solid laser crystal is caused to make laser oscillation by a resonator structure containing therein a nonlinear optical crystal. The electric current to be poured into the laser diode is controlled so that the pumping laser beam emitted from the laser diode is kept at an output level at which the pumping laser beam cannot cause the harmonic of light emitted from the solid laser crystal to make laser oscillation though pumping the solid laser crystal.
摘要翻译：在激光二极管泵浦的固态激光器中，通过从激光二极管发射的激光激光束泵浦固体激光晶体，并且通过包含以下方式的谐振器结构使得从泵浦固体激光晶体发射的光的谐波使激光振荡：其中非线性光学晶体。控制注入激光二极管的电流，使得从激光二极管发射的激光激光束保持在激光束不能引起从固体激光晶体发出的光的谐波产生激光的输出水平振荡虽然泵浦固体激光晶体。

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