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Longitudinally Excited CO2 Laser with Short Laser Pulse like TEA CO2 Laser

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Abstract

We have developed a longitudinally excited CO2 laser with a short laser pulse similar to that of TEA and Q-switched CO2 lasers. A capacitor transfer circuit with a low shunt resistance provided rapid discharge and a sharp spike pulse with a short pulse tail. Specifically, a circuit with a resistance of 10 M Ω provided a spike pulse width of 103.3 ns and a pulse tail length of 61.9 μs, whereas a circuit with a shunt resistance of 100 Ω provided a laser pulse with a spike pulse width of 96.3 ns and a pulse tail length of 17.2 μs. The laser pulses from this longitudinally excited CO2 laser were used for processing a human tooth without carbonization and for glass marking without cracks.

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Acknowledgements

The authors would like to thank Takuya Shimomura (Japan Atomic Energy Agency, Kansai Photon Science Institute) and Yuichi Kanehira (Laser Solutions Co., Ltd.) for their cooperation in the experiments.

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Author notes

  1. Kazuyuki Uno

    Present address: Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8510, Japan

Authors and Affiliations

  1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan

    Kazuyuki Uno & Takahisa Jitsuno

  2. Kobe Shinwa Women’s University, 7-13-1 Suzurandai Kitamachi, Kita-ku, Kobe, 651-1111, Japan

    Kenshi Nakamura

  3. Japan Steel Works Ltd., 2-2-1 Hukuura, Kanazawa-ku, Yokohama, 236-0004, Japan

    Tatsumi Goto

Authors
  1. Kazuyuki Uno
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  2. Kenshi Nakamura
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  3. Tatsumi Goto
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  4. Takahisa Jitsuno
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Correspondence to Kazuyuki Uno.

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Uno, K., Nakamura, K., Goto, T. et al. Longitudinally Excited CO2 Laser with Short Laser Pulse like TEA CO2 Laser. J Infrared Milli Terahz Waves 30, 1123–1130 (2009). https://doi.org/10.1007/s10762-009-9542-2

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  • DOI: https://doi.org/10.1007/s10762-009-9542-2

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