| AVS 60th International Symposium and Exhibition | |
| Thin Film | Thursday Sessions |
| Session TF-ThP |
| Session: | Thin Films Poster Session |
| Presenter: | R. Takahashi, National Astronomical Observatory of Japan |
| Authors: | R. Takahashi, National Astronomical Observatory of Japan T. Akutsu, National Astronomical Observatory of Japan Y. Saito, High Energy Accelerator Research Organization, Japan N. Sakamoto, ICS Corporation, Japan |
| Correspondent: | Click to Email |
Laser interferometer gravitational wave telescopes need baffles to avoid stray light in UHV. The surface of baffles should be treated with anti-reflection coatings without scattering light and increasing outgassing. Diamond-like Carbon (DLC) films are suitable for this aim. The reflectivity of DLC films on SS304 was less than 1% at minimum for 1064nm in wavelength. We could optimize the thickness of the film so that the reflectivity can be less than 20% for any polarization, wide incident angle, and large inhomogeneity of thickness.