Crack propagation in a ruby single crystal by femtosecond laser irradiation

Chiwon Moon, Shingo Kanehira, Masayuki Nishi, Kiyotaka Miura, Takayuki Nakaya, Eita Tochigi, Naoya Shibata, Yuichi Ikuhara, Kazuyuki Hirao

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We have investigated the deformation mechanism of ruby in a microscopic area using a femtosecond laser having a pulse width, wavelength, and repetition rate of 238 fs, 780 nm, and 1 kHz, respectively. Transmission electron microscope observation revealed that a specific oblique pattern originating from cracks having a width of approximately 10 nm formed at the focal point. The peak shift of ruby fluorescence indicated the existence of a residual stress of 0.11 GPa at the irradiated area. Considering the pattern and magnitude of the residual stress at the focal point, we suggest that the crack propagated along the rhombohedral planes and the planes by laser irradiation.

Original languageEnglish
Pages (from-to)3118-3121
Number of pages4
JournalJournal of the American Ceramic Society
Volume92
Issue number12
DOIs
Publication statusPublished - 2009 Dec
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Crack propagation in a ruby single crystal by femtosecond laser irradiation'. Together they form a unique fingerprint.

Cite this