公开(公告)号：US5235607A

公开(公告)日：1993-08-10

申请号：US810299

申请日：1991-12-19

申请人： Minoru Kojima ,  Mitsugu Terada ,  Kazuyoshi Sutoh ,  Takahiro Uchida

发明人： Minoru Kojima ,  Mitsugu Terada ,  Kazuyoshi Sutoh ,  Takahiro Uchida

IPC分类号： G02B6/42 ,  H01S3/02 ,  H01S3/04 ,  H01S3/042 ,  H01S3/093

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.

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

IPC分类号： H01S3/04 ,  H01S3/042

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。

公开(公告)号：US5263042A

公开(公告)日：1993-11-16

申请号：US730464

申请日：1991-07-16

申请人： Minoru Kojima ,  Kazuyoshi Sutoh

发明人： Minoru Kojima ,  Kazuyoshi Sutoh

IPC分类号： H01S3/093

CPC分类号： H01S3/093 ,  H01S3/025 ,  H01S3/07 ,  H01S3/0813

摘要： A diffusion reflector is formed of mica ceramics or fluorine plastics containing barium sulfate, on the surface of which gold or silver is vapor deposited to enhance a diffusion reflectance. A reflective cylinder is formed from said diffusion reflector, and laser rods and lamps are arranged in an internal space of the reflective cylinder to form a solid laser device. Thereby, light can be diffused without focussing light within the reflective cylinder, and the laser rods can be uniformly excited.