High power single-mode fiber laser and its application to metal and non-metal materials

Taizo Miyato, Takashi Kayahara, Akira Fujisaki, Koichi Furukawa, Masafumi Matsushita, Mayu Muramatsu, Yoshihisa Harada, Hiroyuki Niino

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

The power level of Yb doped fiber lasers which operate in continuous wave mode has been increasing in recent years and various kinds of applications using high power single-mode fiber lasers that oscillate in 1microns wavelength range were reported. Single-mode fiber laser that has excellent beam quality of less than 1.1 M2 value with kW class average power can be focused to tens of microns diameters and its optical power density at the focus point is more than 1×108 W/cm2. In this power density range, the interaction between 1microns laser light and matter, not only metal materials but non-metal materials, is completely different from that of lower level. The power density initiates laser processing of copper that has relatively high reflectivity at this wavelength range among metals and alumina base plate with over 90% reflectivity. Other interesting material which can be processed by this energy level is carbon fiber reinforced plastics (CFRP). On the other hand, for industrial application and further processing investigation, modulation speed is one of the most important factors because that relates to processing speed and precise control of laser energy input to a material. In this paper, we report on the power dependence of some material processing of copper wafer welding, alumina base plate scribing, and CFRP cutting using single-mode fiber laser which is capable of over 1kW peak power operation and has rapid switching time below 5 micro seconds.

元の言語English
ホスト出版物のタイトルHigh-Power Laser Materials Processing
ホスト出版物のサブタイトルLasers, Beam Delivery, Diagnostics, and Applications III
出版者SPIE
ISBN(印刷物)9780819498762
DOI
出版物ステータスPublished - 2014 1 1
外部発表Yes
イベントHigh-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications III - San Francisco, CA, United States
継続期間: 2014 2 42014 2 6

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
8963
ISSN(印刷物)0277-786X
ISSN(電子版)1996-756X

Other

OtherHigh-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications III
United States
San Francisco, CA
期間14/2/414/2/6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • これを引用

    Miyato, T., Kayahara, T., Fujisaki, A., Furukawa, K., Matsushita, M., Muramatsu, M., Harada, Y., & Niino, H. (2014). High power single-mode fiber laser and its application to metal and non-metal materials. : High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications III [89630W] (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 8963). SPIE. https://doi.org/10.1117/12.2036570