Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.03 seconds
Temple, P.A.; Milam, D.; Lowdermilk, W.H.
Naval Weapons Center, China Lake, CA (USA). Michelson Labs.; California Univ., Livermore (USA). Lawrence Livermore Lab1980
Naval Weapons Center, China Lake, CA (USA). Michelson Labs.; California Univ., Livermore (USA). Lawrence Livermore Lab1980
AbstractAbstract
[en] Bare fused silica surfaces were prepared by subjecting the mechanically polished surface to a rastered cw CO2 laser beam. Analysis shows that this processing causes: (a) removal of a uniform layer of fused silica; and (b) a probable re-fusing or healing of existing subsurface fractures. The fused silica removal rate is found to be a function of the laser intensity and scan rate. These surfaces are seen to have very low scatter and to be very smooth. In addition, they have exhibited entrance surface damage thresholds at 1.06 μm, and 1 nsec, which are substantially above those seen on the mechanically polished surface. When damage does occur, it tends to be at a few isolated points rather than the general uniform damage seen on the mechanicaly polished part. In addition to the damage results, we will discuss an observational technique used for viewing these surfaces which employs dark-field illumination
Primary Subject
Source
3 Apr 1980; 9 p; Boulder damage conference; Boulder, CO, USA; Oct 1979; CONF-7910130--2; Available from NTIS., PC A02/MF A01
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue