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公开(公告)号：US5214659A
公开(公告)日：1993-05-25
申请号：US604634
申请日：1990-10-29
申请人： Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
发明人： Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
CPC分类号： H01S3/137 , H01S3/1062 , H01S3/225
摘要： Angles of inclination of the two wavelength selection elements arranged on an optical path of a laser beam source are varied to make a laser output variable. Light transmitting ranges of the two wavelength selection elements are coincided with each other so as to adjust the light wavelength bands, thereby the laser beam is narrowed without increasing its fineness.
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公开(公告)号：US5170224A
公开(公告)日：1992-12-08
申请号：US604635
申请日：1990-10-29
申请人： Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
发明人： Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
CPC分类号： G01J9/00 , G01J2003/1239 , G01J2003/1243 , G01J3/2803
摘要： This invention is provided with a wavelength selecting means for uses in selectively receiving beam in compliance with each of a reference beam and a measured beam in order to simplify a correction or comparison of oscillating wavelengths in the laser device and further to improve a reliability and a controlling responsive speed.
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公开(公告)号：US5319441A
公开(公告)日：1994-06-07
申请号：US114287
申请日：1993-09-01
申请人： Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
发明人： Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
CPC分类号： G01J9/0246 , G01J2003/265
摘要： A laser light, whose wavelength is to be measured, is introduced into an etalon, a concentric circular interference stripe derived from the etalon is irradiated onto a one-dimensional photodetector array and a diameter of the interference stripe is measured to measure the wavelength of the laser light. Alternatively, if a reference laser light of known wavelength is introduced into the etalon, as described above, a wavelength measurement of extremely high accuracy can be made without being affected by positional deviations of the optical system.
摘要翻译： 将要测量其波长的激光引入标准具中，将衍生自标准具的同心圆形干涉条纹照射到一维光电检测器阵列上，并测量干涉条纹的直径以测量波长 激光灯。 或者，如果将已知波长的参考激光引入标准具，如上所述，可以在不受光学系统的位置偏差的影响的情况下进行极高精度的波长测量。
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公开(公告)号：US5197078A
公开(公告)日：1993-03-23
申请号：US708498
申请日：1991-05-31
申请人： Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
发明人： Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
CPC分类号： H01S3/036 , H01S3/034 , H01S3/0346
摘要： A gas laser apparatus having transparent laser windows provided on a laser chamber body, in which operating gases is sealed if necessary, comprising circulation means connected to the laser chamber body through an intake port and a discharge port for circulating gases within the laser chamber body and filtration means disposed in said circulation means, further comprising cutoff means for preventing the laser windows from being stained and open and closeably cutting off between the laser chamber body and the laser windows, and having a construction wherein in replacing the laser window, the cutoff means is once placed in a cutoff state, and the laser window is separated from the laser chamber body to place the laser window.
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公开(公告)号：US5251226A
公开(公告)日：1993-10-05
申请号：US775937
申请日：1991-11-04
申请人： Shuntaro Watanabe , Yasuo Oeda , Ken Ohmata , Michito Uehara , Mitsugu Terada , Hideaki Shibata , Yuichiro Terashi
发明人： Shuntaro Watanabe , Yasuo Oeda , Ken Ohmata , Michito Uehara , Mitsugu Terada , Hideaki Shibata , Yuichiro Terashi
CPC分类号： H01S3/038
摘要： A discharge exciting excimer laser device comprises a pair of main discharge electrodes, a dielectric and an auxiliary electrode. The dielectric is in a cylindrical form and has a side opposed to one of the main discharge electrodes, which side is formed into a flat plate-like portion. The auxiliary electrode is embraced within the dielectric leaving a space and is opposed to one of the main discharge electrodes with the flat plate-like portion of the dielectric sandwiched therebetween. Such a construction increases laser output and improves insulating performance.
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公开(公告)号：US5331653A
公开(公告)日：1994-07-19
申请号：US975947
申请日：1993-02-25
申请人： Minoru Kojima , Mitsugu Terada , Kazuyoshi Sutoh
发明人： Minoru Kojima , Mitsugu Terada , Kazuyoshi Sutoh
CPC分类号： H01S3/042 , H01S3/0407
摘要： An object of the invention is to provide a solid state laser device design so as to improve a cooling effect in said laser device; whereby an electric power to be applied to an excitation lamp can be increased, a large oscillation power can be obtained, and a thermal lens effect generated in the laser medium can be suppressed. The solid-state laser device includes a laser medium, an excitation lamp for applying excitation light to the laser medium, a transparent first cooling pipe accommodating the laser medium, a transparent second cooling pipe accommodating the excitation lamp, wherein a first cooling system which feeds a cooling water to the first cooling pipe and a second cooling system which feeds a cooling water to the second cooling pipe are independent of each other and the respective systems have a water-feeding pump. The cooling pipes are formed of cerium-doped quartz glass capable of inhibiting transmission of light having a wavelength not longer than 320 nm.
摘要翻译： PCT No.PCT / JP92 / 00828 Sec。 371日期：1993年2月25日 102（e）日期1993年2月25日PCT提交1992年7月1日PCT公布。 出版物WO93 / 01636 日本1993年1月21日。本发明的目的是提供一种固态激光器件设计，以改善所述激光器件的冷却效果; 从而可以增加施加到激励灯的电力，可以获得大的振荡功率，并且可以抑制在激光介质中产生的热透镜效应。 固体激光装置包括激光介质，用于向激光介质施加激发光的激发灯，容纳激光介质的透明第一冷却管，容纳激发灯的透明第二冷却管，其中第一冷却系统进给 向第一冷却管的冷却水和向第二冷却管供给冷却水的第二冷却系统彼此独立，各个系统具有给水泵。 冷却管由能够抑制波长不超过320nm的光的透射的掺铈石英玻璃形成。
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公开(公告)号：US5235607A
公开(公告)日：1993-08-10
申请号：US810299
申请日：1991-12-19
CPC分类号： H01S3/0931 , G02B6/4296 , H01S3/025 , H01S3/042 , H01S3/0407 , H01S3/061
摘要： According to the present invention there are provided a solid-state laser device using a laser rod not smaller than 180 mm in length as a laser medium, thereby capable of providing a high output power, facilitating maintenance and inspection, and permitting the reduction of size and simplification in comparison with a conventional laser device using plural laser rods, as well as a machining apparatus using the said laser device as a machining energy source, and a solid-state laser device wherein a laser medium is held in a free state within a resonator so that a longitudinal direction of the laser medium is coincident with an optical axis direction of laser beam and so that the laser medium is capable of expansion or contraction in the said optical axis direction, thereby preventing the breakage of the laser medium and the deviation of the optical axis of laser beam.
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公开(公告)号：US5239552A
公开(公告)日：1993-08-24
申请号：US861382
申请日：1992-03-31
CPC分类号： B23K26/1482 , B23K26/1476 , B23K26/16 , Y10S372/701
摘要： A laser output unit according to the present invention comprises a body having a laser output port at an extreme and thereof, lenses provided within said body to condense laser beam introduced to emit it from the laser output port, and a protective glass provided between said laser output port and said lens within said body. A gas jet port and a gas exhaust port opposed to said gas jet port are provided at said body portion between said protective glass and said laser output port. A gas crosses at a position between the protective glass and the laser output port. Flying matter is blown away by the gas and does not arrive at the protective glass.
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公开(公告)号：US5084884A
公开(公告)日：1992-01-28
申请号：US561732
申请日：1990-08-01
申请人： Mitsugu Terada
发明人： Mitsugu Terada
摘要： According to the invention, a probe laser beam having a wavelength which is different from that of the laser beam emitted from a laser apparatus is introduced into the apparatus to adjust the optical device so that any fluctuations in the probe laser beam passing through or reflected from the optical device may be eliminated. Therefore, any fluctuations in output power and/or the oscillation wavelength of the narrowed bandwidth laser beam emitted from the apparatus can be directly detected and the laser apparatus can be so controlled as to ensure a stabilized operation under an optimum condition.
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