Temperature measurements by thermal radiation during ArF excimer laser ablation with gelatin gel

Miya Ishihara, Tsunenori Arai, Makoto Kikuchi, Hironori Nakano, Minoru Obara

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We measured temperature elevation during Photorefractive Keratectomy (PRK) by thermal radiation. The thermal radiation from ablating surface of gelatin gel (15%wt) by ArF excimer laser was detected by a MCT (Mercury Cadmium Telluride) detector with 1 μs rise time. The measured signal increased sharply just after the laser pulse and decreased quasi-exponentially. We calculated the temperature elevation using Stefan-Boltzmann radiation law. The maximum temperature elevation was 97 °C at 208 mJ/cm2 in laser fluence. The temperature elevation over 60 °C was kept for 85 μs. These temperature elevation might induce possible heat damage on ablated surface. Our high temporal resolution temperature monitoring may be available to achieve safety and precise PRK.

Original languageEnglish
Pages (from-to)1873-1874
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume4
Publication statusPublished - 1998 Dec 1
EventProceedings of the 1998 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 6) - Hong Kong, China
Duration: 1998 Oct 291998 Nov 1

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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