OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 21 — Jul. 20, 2000
  • pp: 3654–3663

Rear-surface laser damage on 355-nm silica optics owing to Fresnel diffraction on front-surface contamination particles

François Y. Génin, Michael D. Feit, Mark R. Kozlowski, Alexander M. Rubenchik, Alberto Salleo, and James Yoshiyama  »View Author Affiliations


Applied Optics, Vol. 39, Issue 21, pp. 3654-3663 (2000)
http://dx.doi.org/10.1364/AO.39.003654


View Full Text Article

Enhanced HTML    Acrobat PDF (2084 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Light intensity modulations caused by opaque obstacles (e.g., dust) on silica lenses in high-power lasers often enhance the potential for laser-induced damage. To study this effect, particles (10–250 µm) with various shapes were sputter deposited on the input surface and irradiated with a 3-ns laser beam at 355 nm. Although a clean silica surface damages at fluences above 15 J/cm2, a surface contaminated with particles can damage below 11.5 J/cm2. A pattern that conforms to the shape of the input surface particle is printed on the output surface. Repetitive illumination resulted in catastrophic drilling of the optic. The damage pattern correlated with an interference image of the particle before irradiation. The image shows that the incident beam undergoes phase (and amplitude) modulations after it passes around the particle. We modeled the experiments by calculating the light intensity distribution behind an obscuration by use of Fresnel diffraction theory. The comparison between calculated light intensity distribution and the output surface damage pattern showed good agreement. The model was then used to predict the increased damage vulnerability that results from intensity modulations as a function of particle size, shape, and lens thickness. The predictions provide the basis for optics cleanliness specifications on the National Ignition Facility to reduce the likelihood of optical damage.

© 2000 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials

History
Original Manuscript: October 12, 1999
Revised Manuscript: March 30, 2000
Published: July 20, 2000

Citation
François Y. Génin, Michael D. Feit, Mark R. Kozlowski, Alexander M. Rubenchik, Alberto Salleo, and James Yoshiyama, "Rear-surface laser damage on 355-nm silica optics owing to Fresnel diffraction on front-surface contamination particles," Appl. Opt. 39, 3654-3663 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-21-3654

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited