Laser Damage Live Video 1: The Kerr Effect – Ejection


This video shows a high threshold G&H front face coating allowing an intense laser beam to enter a silica block. The beam was so intense that the Kerr Effect was evident and explosive damage is seen happening live on the exit face. For this event to occur the high quality of the coating actually elevated the surface damage threshold of Silica by ~30%. While this is seen frequently in low LIDT substrates, we have never seen this in silica. Uncoated fused silica has a very high damage threshold.