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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 15 — Jul. 20, 2009
  • pp: 12362–12378

Birefringent- and quasi phase-matching with BaMgF4 for vacuum-UV/UV and mid-IR all solid-state lasers

Encarnación G. Víllora, Kiyoshi Shimamura, Keiji Sumiya, and Hiroyuki Ishibashi  »View Author Affiliations

Optics Express, Vol. 17, Issue 15, pp. 12362-12378 (2009)

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BaMgF4 is a ferroelectric fluoride which shows a very wide transparency range extending from 125 nm to 13 µm. The conjunction of these properties confers to BaMgF4 a unique chance for optical applications in the UV and mid-IR wavelength regions, where other nonlinear materials cannot be used. In particular its application as frequency converter in all solid-state lasers is considered. The wavelength dispersion of the refractive indices along the three optical principal axes is measured in the transparent region, and the Sellmeier coefficients for the three refractive indices are determined. The conditions for nonlinear optical processes are calculated for birefringent-matching and quasi phase-matching, with special emphasis in the UV and IR wavelength regions. Quasi phase-matching can be achieved in the whole transparent wavelength region, in contrast to birefringent-matching, which can be obtained in a limited range 573-5634 nm. First demonstration of second harmonic generation by quasi phase-matching with a ferroelectric fluoride is shown by frequency-doubling the emissions of a 1064 nm Nd:YAG laser and a tunable Ti:sapphire laser. The shortest emission is obtained in the UV at 368 nm, indicating the potential of BaMgF4 as nonlinear medium for the fabrication of all solid-state lasers in the vacuum-UV/UV and mid-IR wavelength regions.

© 2009 Optical Society of America

ToC Category:
Nonlinear Optics

Original Manuscript: June 16, 2009
Revised Manuscript: July 6, 2009
Manuscript Accepted: June 30, 2009
Published: July 6, 2009

Encarnacion G. Víllora, Kiyoshi Shimamura, Keiji Sumiya, and Hiroyuki Ishibashi, "Birefringent- and quasi phase-matching with BaMgF4 for vacuum-UV/UV and mid-IR all solid-state lasers," Opt. Express 17, 12362-12378 (2009)

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