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Optics Letters

Optics Letters


  • Vol. 22, Iss. 6 — Mar. 15, 1997
  • pp: 411–413

Direct formation of a surface-relief grating on glass by ultraviolet visible laser irradiation

Keiji Tsunetomo and Tadashi Koyama  »View Author Affiliations

Optics Letters, Vol. 22, Issue 6, pp. 411-413 (1997)

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Surface-relief gratings were directly fabricated onto a glass surface by UV–visible laser irradiation. The glass surface was pretreated by molten salt, including Ag ions. Periodic intensity modulation of the laser light was conducted with a phase mask or by an interference technique. A pattern generated by intensity modulation was precisely transcribed onto the glass surface and a surface-relief grating was formed. The period and depth of the grating were 0.5 to 10 µm and less than 0.8 µm, respectively. The cross-sectional profile of the grating was sinusoidal or triangular, with very smooth surface morphology.

© 1997 Optical Society of America

Keiji Tsunetomo and Tadashi Koyama, "Direct formation of a surface-relief grating on glass by ultraviolet visible laser irradiation," Opt. Lett. 22, 411-413 (1997)

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