Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Mitigation of growth of laser initiated surface damage in fused silica using a 4.6-micron wavelength laser

[+] Author Affiliations
Gabe Guss, Isaac Bass, Vaughn Draggoo, Richard Hackel, Steve Payne

Lawrence Livermore National Lab.

Mark Lancaster, Paul Mak

Naval Research Lab.

Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64030M (January 15, 2007); doi:10.1117/12.696084
Text Size: A A A
From Conference Volume 6403

  • Laser-Induced Damage in Optical Materials: 2006
  • Gregory J. Exarhos; Arthur H. Guenther; Keith L. Lewis; Detlev Ristau; M. J. Soileau; Christopher J. Stolz
  • Boulder, CO | September 25, 2006

abstract

Surface damage caused by high fluence, 351 nm light to fused silica optics can adversely affect the performance of fusion class laser systems like that of the National Ignition Facility (NIF). It is typically initiated as a small pit and grows in both diameter and depth during normal operation with cracks that extend into the bulk. Mitigation of this growth has been previously reported using a 10.6 micron CO2 laser. Here, we report growth mitigation with the 4.6 micron light from a frequency-doubled, 9.2 micron CO2 laser. The motivation for using 4.6 microns is >25 times longer absorption length in fused silica at room temperature compared to that at 10.6 micron. Mitigation of subsurface cracks at 10.6 micron required ablation of material to the depth of the cracks. In contrast, it was possible to mitigate the subsurface cracks using 4.6 micron light without significant ablation of material. Damage sites as large as 500 microns in diameter with cracks extending to 200 microns in depth were successfully mitigated with 4.6 microns.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Gabe Guss ; Isaac Bass ; Vaughn Draggoo ; Richard Hackel ; Steve Payne, et al.
"Mitigation of growth of laser initiated surface damage in fused silica using a 4.6-micron wavelength laser", Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64030M (January 15, 2007); doi:10.1117/12.696084; http://dx.doi.org/10.1117/12.696084


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.