Laser damage mechanisms of a variable refractivity thin film consisted of nonquarter wavelength film layers
- Received Date: 1997-06-16
- Accepted Date: 1997-10-27
- Available Online: 1998-09-25
Abstract: The physics mechanism of field effect and thermal effect on a variable refractivity optical dielectric thin film consisted of nonquarter wavelength film layers irradiated by a beam of high power laser to produce damage have been discussed in this paper,and laser damage thresholds of film layer specimen have been measured.It has been indicated theoretically and experimentally that the thin film absorbing laser energy is a main reason to produce laser damage for this kind of film.