Simultaneous irradiation of Er:YAG and Ho:YAG lasers for efficient ablation of hard tissues

Tomonori Watanabe, Katsumasa Iwai, Yuji Matsuura

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


Hard tissues are irradiated with combined beam of Er:YAG and Ho:YAG lasers to achieve highly efficient ablation with lower laser power. We controlled the delay time between pulses of the two lasers and irradiated alumina ceramic balls that are used as hard tissue samples. By optimizing the delay time, the combined laser beam provides 40% higher perforation depth compared with the result with independent radiation of Er:YAG or Ho:YAG laser. The ablation mechanism are observed and investigated by using an ultra-high-speed camera and infrared thermography camera.

Original languageEnglish
Article number71730R
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Publication statusPublished - 2009
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX - San Jose, CA, United States
Duration: 2009 Jan 242009 Jan 25


  • Er:YAG laser
  • Hard tissue ablation
  • Ho:YAG laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging


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