WO2017075732A1 - 安装有柱面准直镜的射频激光器 - Google Patents

安装有柱面准直镜的射频激光器 Download PDF

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Publication number
WO2017075732A1
WO2017075732A1 PCT/CN2015/000756 CN2015000756W WO2017075732A1 WO 2017075732 A1 WO2017075732 A1 WO 2017075732A1 CN 2015000756 W CN2015000756 W CN 2015000756W WO 2017075732 A1 WO2017075732 A1 WO 2017075732A1
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Prior art keywords
laser
cylindrical
radio frequency
mirror
collimating mirror
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PCT/CN2015/000756
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English (en)
French (fr)
Inventor
徐海军
赖颢天
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徐海军
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Priority to PCT/CN2015/000756 priority Critical patent/WO2017075732A1/zh
Publication of WO2017075732A1 publication Critical patent/WO2017075732A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof

Definitions

  • the present invention relates to a radio frequency laser, and more particularly to a radio frequency laser mounted with a cylindrical collimating mirror.
  • the conventional RF lasers currently on the market do not have a cylindrical collimator.
  • the laser spot (beam cross section) is flat, similar to a flat ellipse. This kind of beam affects the laser processing application.
  • the engraving pattern is fuzzy and not detailed.
  • the cutting slits are different in width and the cut surface is not smooth and has hemp. The effect is not good, and other applications are not good.
  • the present invention provides a radio frequency laser equipped with a cylindrical collimating mirror.
  • the laser beam is unidirectionally shaped, that is, the flat beam diverges in a flat direction, and is diverged to
  • an approximately circular shape is formed and shaped so that the laser beams are output in parallel with an approximately circular beam.
  • a radio frequency laser mounted with a cylindrical collimating mirror is provided.
  • a cylindrical collimating mirror is mounted inside the radio frequency laser.
  • the RF laser is internally provided with a folding mirror mount.
  • the folding mirror mount is mounted on the outside of the RF laser half-reverse flange.
  • two folding mirrors are mounted on the folding mirror base.
  • the cylindrical collimating mirror is a one-way shaping of the laser beam.
  • the purpose of mounting the cylindrical collimating mirror is to correct the laser beam to an approximately circular beam parallel output.
  • the laser beam output by the RF laser is flat, the divergence angle of the long-direction beam is close to zero, and the divergence angle of the flat beam is obvious.
  • the cylindrical surface of the cylindrical collimating mirror is axially parallel to the long direction (long axis) of the cross section of the laser beam.
  • the position at which the cylindrical collimating mirror is mounted is determined by the laser beam of the radio frequency laser, and the cylindrical collimating mirror is mounted at an optimum position where the laser flattening beam diverges to approximately the same distance as the long-direction beam.
  • RF lasers with cylindrical collimating mirrors Compared with conventional RF lasers on the market, RF lasers with cylindrical collimating mirrors have the following advantages: improved laser processing, improved and fully utilized laser energy . In the case of fully utilizing the laser energy, when the working conditions are the same, the same processing can be completed with lower power, that is, the processing cost is reduced, and the service life of the laser is prolonged.
  • Figure 1 shows a schematic diagram of beam shaping of a cylindrical collimating mirror
  • FIG. 2 illustrates an axial side view of a radio frequency laser mounted with a cylindrical collimating mirror, in accordance with an exemplary embodiment of the present invention
  • the laser beam is output from the laser cavity through the laser output window.
  • the laser beam is flat, which is characterized by the long-range beam divergence angle close to zero, and the flat beam divergence angle is obvious in the laser beam.
  • the flat beam diverges to approximately the same length as the long beam this position is the optimal position for the laser beam shaping by the cylindrical collimator.
  • the shaped laser beam is approximately circular, and the beams are output in parallel.
  • FIG. 2 shows an axial side view of a radio frequency laser mounted with a cylindrical collimating mirror, in accordance with an exemplary embodiment of the present invention.
  • the laser 8 is a gas-tight laser of the RF laser.
  • the cavity 6 is output by the laser output window 9 by the action of the positive electrode plate 15, the negative electrode plate 13, the full-reverse (mirror) flange 20, and the half-reverse (mirror) flange 7 of the laser (the laser beam at this time is flat,
  • the flattening angle has an emission angle, and is output to the folding mirror 10 on the folding mirror base 11, and the laser 8 is folded back to the folding mirror 12 on the folding mirror base 11 by the folding mirror 10, and then the laser beam is folded back to the beam by the folding mirror 12.
  • the laser beam 14 is still emitting in the beam flat direction at this time, and when the flat beam is diverged to be approximately equal to the long beam, the laser beam 14 is shaped by the cylindrical collimating mirror 16 mounted thereon to form The output of the approximately circular parallel laser beam 17 is completed, and the action of the cylindrical collimating mirror 16 is completed.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)

Abstract

一种安装有柱面准直镜(16)的射频激光器，主要包括射频激光器、柱面准直镜(16)和折返镜(10,12)。

Description

安装有柱面准直镜的射频激光器 技术领域
本发明涉及射频激光器，具体涉及安装有柱面准直镜的射频激光器。
背景技术
目前市场上存在的传统的射频激光器都没有安装柱面准直镜。
没有安装柱面准直镜的射频激光器主要存在以下缺陷：
(1)激光光斑(光束横断面)交扁，类似于扁椭圆形，这种光束影响激光加工应用，雕刻图案模糊、不细致，切割割缝宽窄不一、割面不光滑有麻纹，即效果欠佳，其它应用也不好。
(2)这种扁形激光光束，激光能量分散、不集中，即降低了激光能量利用率，又使部分激光能量浪费。
(3)为抵消浪费掉的激光能量，在加工时就要加大激光功率，这即增加了加工成本，也降低了激光器的使用寿命。
发明内容
鉴于上述背景情况，本发明提供一种安装有柱面准直镜的射频激光器，在柱面准直镜的作用下，激光光束单向整形，即扁形光束的扁向发散，待其发散到与长向光束近似相等时，形成近似圆形，进行整形，使激光光束以近似圆形光束平行输出。激光光束越集中、光斑越圆越小，激光利用率就越高，加工效果就越好。
根据本发明的一方面，提供一种安装有柱面准直镜的射频激光器。
优选地，射频激光器内部安装了柱面准直镜。
优选地，射频激光器内部安装了折返镜座。
优选地，折返镜座安装在了射频激光器半反法兰的外侧。
优选地，折返镜座上安装了两片折返镜。
优选地，柱面准直镜是将激光光束单向整形。
优选地，安装柱面准直镜的目的是将激光光束校正到近似圆形光束平行输出。射频激光器输出的激光光束成扁形，长向光束发散角接近于零，扁向光束发散角明显
优选地，柱面准直镜的柱面轴向平行于激光光束的横截面的长向(长轴)。
优选地，安装柱面准直镜的位置由射频激光器的激光光束决定，柱面准直镜安装最佳位置是在激光扁向光束发散到与长向光束近似相等处。
安装有柱面准直镜的射频激光器与市场上现有的传统的射频激光器相比，安装有柱面准直镜的射频激光器有如下优点：提高了激光加工效果，提高并充分利用了激光能量。在充分利用激光能量的情况下，工况相同时，用较低的功率就可以完成相同的加工工作，也就是说，即降低了加工成本，又延长了激光器的使用寿命。
附图说明
结合以下附图来详细描述本发明的示例实施例，附图中：
图1示出了柱面准直镜光束整形原理图；
图2示出了根据本发明的示例实施例的安装有柱面准直镜的射频激光器的轴侧视图；
具体实施方式
以下结合附图来详细描述本发明的示例实施例的安装有柱面准直镜的射频激光器。
如图1所示，激光光束由激光腔内通过激光输出窗口输出，此时的激光光束是扁形的，其特点是长向光束发散角接近于零，扁向光束发散角明显，在激光光束的光路上，当扁向光束发散到与长向光束近似相等时，此位置便是柱面准直镜对激光光束整形的最佳位置。通过整形后的激光光束近似圆形，光束平行输出。
图2示出了根据本发明的示例实施例的安装有柱面准直镜的射频激光器的轴侧视图。
如图2所示，具体描述如下，激光8在射频激光器的气密激光 腔6内，由激光器的正极板15、负极板13、全反(镜)法兰20、半反(镜)法兰7的作用，通过激光输出窗口9输出(此时的激光光束成扁形，扁向有散发角)，输出到折返镜座11上的折返镜10，再由折返镜10将激光8折返到折返镜座11上的折返镜12，接着由折返镜12将激光光束折返到光束整形腔18内；此时的激光光束14在光束扁向还在散发，当扁向光束发散到与长向光束近似相等时，激光光束14被安装于此的柱面准直镜16整形，形成近似圆形的平行激光光束17输出，到此柱面准直镜16的作用完成.
以上对本发明的示例实施例的详细描述是为了说明和描述的目的而提供。不是为了穷尽或将本实用新型限制为所公开的精确形式。显然，许多变型和改变对本领域技术人员而言是显而易见的。实施例的选择和描述是为了最佳地说明本发明的原理及其实际应用，从而使本领域其他技术人员能够理解本发明的各种实施例和适于特定使用预期的各种变型。本发明的实施例可以省略上述技术特征中的一些技术特征，仅解决现有技术中存在的部分技术问题。而且，所公开的技术特征可以进行任意组合。本发明的范围由所附权利要求及其等价物来限定，本领域技术其他人员可以对所附权利要求中所公开的技术方案进行各种变型和组合。

Claims (8)

  1. 一种安装有柱面准直镜的射频激光器，主要包括射频激光器、柱面准直镜、折返镜座和折返镜；柱面准直镜安装在射频激光器的光束整形腔内。
  2. 根据权利要求1所述的安装有柱面准直镜的射频激光器，其特征在于：射频激光器内部安装了柱面准直镜。
  3. 根据权利要求1所述的安装有柱面准直镜的射频激光器，其特征在于：柱面准直镜将扁形激光束校正到近似圆形的平行激光束。
  4. 根据权利要求1所述的安装有柱面准直镜的射频激光器，其特征在于：射频激光器内部安装了折返镜座。
  5. 根据权利要求4所述的安装有柱面准直镜的射频激光器，其特征在于：折返镜座上安装了两片折返镜。
  6. 根据权利要求1所述的安装有柱面准直镜的射频激光器，其特征在于：折返镜座安装在了射频激光器半反法兰的外侧。
  7. 根据权利要求1-6之一所述的安装有柱面准直镜的射频激光器，其特征在于：柱面准直镜安装位置是在激光扁向光束发散到与长向光束近似相等之处。
  8. 根据权利要求7所述的安装有柱面准直镜的射频激光器，其特征在于：柱面准直镜的柱面轴向平行于激光光束的横截面的长向。
PCT/CN2015/000756 2015-11-03 2015-11-03 安装有柱面准直镜的射频激光器 WO2017075732A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06152037A (ja) * 1992-11-05 1994-05-31 Mitsubishi Electric Corp ガスレーザ装置
CN2255681Y (zh) * 1996-06-19 1997-06-04 中国科学院安徽光学精密机械研究所 射频板条式二氧化碳激光器
WO1999008347A1 (de) * 1997-08-11 1999-02-18 Rofin-Sinar Laser Gmbh Bandleiterlaser mit einem optischen abbildungssystem zur strahlformung
CN101420101A (zh) * 2007-10-25 2009-04-29 罗芬-西纳英国有限公司 气体激光器件
CN205070152U (zh) * 2015-11-03 2016-03-02 北京热刺激光技术有限责任公司 安装有柱面准直镜的射频激光器
CN105375252A (zh) * 2015-11-03 2016-03-02 北京热刺激光技术有限责任公司 安装有柱面准直镜的射频激光器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06152037A (ja) * 1992-11-05 1994-05-31 Mitsubishi Electric Corp ガスレーザ装置
CN2255681Y (zh) * 1996-06-19 1997-06-04 中国科学院安徽光学精密机械研究所 射频板条式二氧化碳激光器
WO1999008347A1 (de) * 1997-08-11 1999-02-18 Rofin-Sinar Laser Gmbh Bandleiterlaser mit einem optischen abbildungssystem zur strahlformung
CN101420101A (zh) * 2007-10-25 2009-04-29 罗芬-西纳英国有限公司 气体激光器件
CN205070152U (zh) * 2015-11-03 2016-03-02 北京热刺激光技术有限责任公司 安装有柱面准直镜的射频激光器
CN105375252A (zh) * 2015-11-03 2016-03-02 北京热刺激光技术有限责任公司 安装有柱面准直镜的射频激光器

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