High-Damage-Threshold Pinhole for Glass Fusion Laser Applications

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Description

We are investigating methods to fabricate high-damage-threshold spatial-filter pinholes that might not be susceptible to plasma closure for relatively high energies and long pulses. These are based on the observation that grazing-incidence reflection from glass can withstand in excess of 5 kJ/cm{sup 2} (normal to the beam) without plasma formation. The high damage threshold results from both the cos q spreading of the energy across the surface and the reflection of a large fraction of the energy from the surface, thereby greatly reducing the field strength within the medium.

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Kumit, N.A.; Letzring, S.A. & Johnson, R.P. June 7, 1998.

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Description

We are investigating methods to fabricate high-damage-threshold spatial-filter pinholes that might not be susceptible to plasma closure for relatively high energies and long pulses. These are based on the observation that grazing-incidence reflection from glass can withstand in excess of 5 kJ/cm{sup 2} (normal to the beam) without plasma formation. The high damage threshold results from both the cos q spreading of the energy across the surface and the reflection of a large fraction of the energy from the surface, thereby greatly reducing the field strength within the medium.

Physical Description

Medium: P; Size: vp.

Notes

INIS; OSTI as DE00762102

Source

  • Third Annual International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, Monterey, CA (US), 06/07/1998--06/12/1998

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  • Report No.: LA-UR-98-3626
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 762102
  • Archival Resource Key: ark:/67531/metadc719298

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  • June 7, 1998

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • May 6, 2016, 1:26 p.m.

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Kumit, N.A.; Letzring, S.A. & Johnson, R.P. High-Damage-Threshold Pinhole for Glass Fusion Laser Applications, article, June 7, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc719298/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.