... The “scattering characterization” that was developed in Marseilles enables us today, with the help of complementary tools (causal model, isotropy degree, …), to point out the origin of micro-roughness in optical coatings without any ambiguity. Each material can be associated to a key parameter...

... failures, and Auger depth profiling will be presented. Auger depth profiling Auger spectroscopy Ball cratering Dielectric films Energy dispersive x-ray spectroscopy Optical coatings Radiation damage Manuscript received 12-29-89 Surface Analytical Methods for the Assessment of Damage...

... hardness laser-induced damage nondestructive evaluation nuclear hardness optical coatings thermal conductivity thermal diffusivity thermal properties thermal transport thin films Manuscript received 1-30-90 Thermal Transport Studies of Optical Coatings, Interfaces and Surfaces by Thermal...

... , and an optically smooth silicon substrate are about 3 nm wide and exhibit +2 and 0 bonding states for Si, and +2 for Ti, states characteristic of oxygen deficient films. The TiO 2 /Si interface also contains Ti-Si bonds, or partial silicide formation. optical coatings interfaces ion beams TiO 2 SiO 2...

... thermal annealing. Raman spectroscopy optical coatings TiO 2 amorphous types in-situ study structural transformation Manuscript received 2-11-86 SAR Probing Structural Properties of Amorphous Films With RamanSpectroscopy C. Y. She and L. S. Hsu* Physics Department, Colorado State University...

... We report the present status of a project to measure the thermal transport properties of optical coating materials in thin-film format. The measurement technique employs a noncontact nondestructive method based on thermal diffusion-wave interferometry. Initial results confirm the feasibility...

... Crystallization of glassy TiO 2 films used in optical coatings can be a problem in high power applications and may be a major limitation to the laser damage threshold. An attempt to suppress such crystallization involved mixing small amounts of SiO 2 into TiO 2 during the ion-beam sputter...

... and reflecting coatings. Preliminary data at 248 nm with a 23 ns pulse length will be presented. defect population diagnostics optical coatings time dependence of damage - Manuscript Not Received - TIME TO FAILURE IN SINGLE PULSE LASER INDUCED DAMAGE IN THIN FILM OPTICAL COATINGS J. Boyer Los Alamos...

... results compare favorably with designs generated using numerical methods of non-linear optimization. FEL optics grazing angle of incidence coatings optical coatings The Design of Optimum High Reflectivity Coatings for Grazing Angles of Incidence Manuscript Received 12-11-85 Jeffrey B. Shellan W...

... coatings delamination diffusion wave interfermetry diffusion waves laser induced damage metal coatings nickel coatings optical coatings thermal contact resistance thermal diffusion waves thermal transport thermal waves thin films Manuscript Received 5-24-88 sar B A S I C S T U D I E S OF O P...

... onto the substrate. amorphous ion beam optical band gap optical coatings reactive sputtering refractive index silicon oxide tantalum oxide titanium oxide STP954-EB/Oct. 1986 Manuscript Beaeived 7-24-85 SAff Oxygen Threshold for Ion-Bean Sputter Deposited Oxide Coatings H. Demiryont...

... scattering. Further heating of Type A films beyond 900°C shows a second phase transformation to anatase-rutile mixtures. absorption amorphous anatase annealing crystallization extinction coefficient ion beam optical band gap optical coatings optical extinction Raman scattering refractive...

... results compare favorably with designs generated using numerical methods of non-linear optimization. FEL optics grazing angle of incidence coatings optical coatings STP954-EB/Oct. 1986 Manusaript Reaeived 12-11-84 SAR The Design of Optimum High Reflectivity Coatings for Grazing Angles...

... A number of commercially available optical coatings, both antireflective and high reflective, have been tested for their laser induced damage threshold, involving a total of eight (8) different laboratories. The results obtained and the experimental methods used at these laboratories were...

... a quarterwavelength. A significant variation of threshold with coating thickness was not observed, but the median thresholds increased slightly as coating thickness increased. antireflective coatings damage laser-induced damage optical coatings pulse duration scaling reflectors thickness of coatings...

... films at 1.06 μm showed absorption below 100 p/m. The extinction coefficient, however, increased in the visible, typically reaching values corresponding to a few tenths percent absorption at 0.4 μm. optical coatings ion beam TiO 2 SiO 2 refractive index ellipsometry STP911-EB/N0V. 1985...

... The microstructure of thin films applied by conventional physical vapor deposition for use as optical coatings is columnar for most of the materials commonly used. This has been established for about a decade through numerous experimental observations employing microfractographical replication...

.... These measurements are especially critical in the important cleaning process. The cavity-attenuated phase-shift (CAPS) method is ideally suited for performing these important measurements, permitting us to obtain mirrors with reflectivities of R = 0.99975 ± 0.00005. cavity phase shift method optical coatings...

... We have measured the laser-induced damage thresholds for 248 nm wavelength light of over 100 optical coatings from commercial vendors and research institutions. All samples were irradiated once per damage site with temporally multi-lobed, 20-ns pulses generated by a KrF laser. The survey...

.... The morphology and composition of optimally prepared films will be described, and the results of absorption and chemical laser damage measurements are discussed. amorphous silicon electron microscopy hydrogenated amorphous silicon laser damage optical absorption optical coatings silicon dioxide...