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UV-laser investigation of dielectric thin films

Conference ·
OSTI ID:552070
; ;  [1]
  1. Friedrich-Schiller-Universitaet Jena (Germany); and others
Utilizing thermal Mirage technique, UV laser damage resistivity studies on LaF{sub 3}/MgF{sub 2}, Al{sub 2}O{sub 3}/SiO{sub 2}, and HfO{sub 2}/SiO{sub 2} multilayer stacks have been performed at {lambda} = 248nm, {tau} = 20ns. Investigating these stacks by changing the number of (HL) pairs and the substrate material, optical and thermal coating properties were shown to be responsible for UV single-shot laser damage. Similarly, the damage threshold of selected samples is to be influenced by the deposition technique. Furthermore, multishot damage measurements on LaF{sub 3}/MgF{sub 2} high-reflecting multilayer coatings reveal the accumulation of laser energy in the predamage range.
Research Organization:
International Society for Optical Engineering, Washington, DC (United States)
OSTI ID:
552070
Report Number(s):
CONF-9510106--Vol.2714
Country of Publication:
United States
Language:
English