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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 12 — Apr. 20, 2001
  • pp: 2043–2046

Laser microprobe and resonant laser ablation for depth profile measurements of hydrogen isotope atoms contained in graphite

Masafumi Yorozu, Tatsuya Yanagida, Terunobu Nakajyo, Yasuhiro Okada, and Akira Endo  »View Author Affiliations


Applied Optics, Vol. 40, Issue 12, pp. 2043-2046 (2001)
http://dx.doi.org/10.1364/AO.40.002043


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Abstract

We measured the depth profile of hydrogen atoms in graphite by laser microprobing combined with resonant laser ablation. Deuterium-implanted graphite was employed for the measurements. The sample was ablated by a tunable laser with a wavelength corresponding to the resonant wavelength of 1S–2S of deuterium with two-photon excitation. The ablated deuterium was ionized by a 2 + 1 resonant ionization process. The ions were analyzed by a time-of-flight mass spectrometer. The deuterium ions were detected clearly with the resonant ablation. The detection limit was estimated to be less than 1016 atoms/cm3 in our experiments. We determined the depth profile by considering the etching profile and the etching rate. The depth profile agreed well with Monte Carlo simulations to within a precision of 23 μm for the center position and 4-μm precision for distributions for three different implantation depths.

© 2001 Optical Society of America

OCIS Codes
(120.1880) Instrumentation, measurement, and metrology : Detection
(300.6350) Spectroscopy : Spectroscopy, ionization
(350.3390) Other areas of optics : Laser materials processing

Citation
Masafumi Yorozu, Tatsuya Yanagida, Terunobu Nakajyo, Yasuhiro Okada, and Akira Endo, "Laser microprobe and resonant laser ablation for depth profile measurements of hydrogen isotope atoms contained in graphite," Appl. Opt. 40, 2043-2046 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-12-2043


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References

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