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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 24 — Nov. 27, 2006
  • pp: 11687–11693

Germanate glass as a window for high energy laser systems

S. S. Bayya, G. D. Chin, J. S. Sanghera, and I. D. Aggarwal  »View Author Affiliations


Optics Express, Vol. 14, Issue 24, pp. 11687-11693 (2006)
http://dx.doi.org/10.1364/OE.14.011687


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Abstract

A modified Barium Gallo-Germanate glass has been developed as an exit window for high energy lasers operating in the mid-infrared wavelength region. All the physical properties, for application as a window for high energy laser systems have been measured. Absorption loss and thermo-optic coefficient were identified as key in developing the Barium Gallo-Germanate glass for high energy laser applications. A purification method was developed to reduce the absorption loss of the glass from 6×10-2 cm-1 to 2×10-3 cm-1 at 3.8 µm. Manufacturability in large size windows has been demonstrated with the fabrication of an 18″ diameter prototype window. Modified Barium Gallo-Germanate glasses have also been developed with lower thermo-optic coefficient resulting in lower optical path distortion.

© 2006 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties

ToC Category:
Materials

History
Original Manuscript: October 9, 2006
Revised Manuscript: November 12, 2006
Manuscript Accepted: November 17, 2006
Published: November 27, 2006

Citation
Shyam S. Bayya, Geoffrey D. Chin, Jasbinder S. Sanghera, and Ishwar D. Aggarwal, "Germanate glass as a window for high energy laser systems," Opt. Express 14, 11687-11693 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-24-11687


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References

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  8. J.S. Browder, S.S. Ballard and P. Klocek, "Physical Properties of Crystalline Infrared Materials" in "Handbook of Infrared Materials," edited by P. Klocek, Mercel Dekker Inc. Publications, 193-425, (1991).

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