Translator Disclaimer
19 August 1996 Laser optical coatings with different reflectance profiles
Author Affiliations +
Abstract
Graded reflectance coatings are typically identified with optical coatings having a gaussian reflectance profile along the surface with circular symmetry. Indeed the first use of such coatings was as output couplers of gaussian laser resonators, then also super-gaussian reflectance profiles were considered. The variation of reflectance along the surface is obtained in most cases by a coating thickness variation, with an appropriate choice of both coating structure and thickness profile it is possible to obtain any maximum reflectance and any spatial behavior of the reflectance itself. New reflectance profiles that seem to be of interest are: graded reflectances with a central minimum, that is high transmittance at the coating center, and non- monotonic radial reflectance profiles as for example high reflectance on an annular area of the optical component. In addition, coatings with non-circular symmetry appear useful for particular laser applications. The methods for obtaining such reflectance profiles are discussed.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Angela M. Piegari, Salvatore Scaglione, and Gabriele Emiliani "Laser optical coatings with different reflectance profiles", Proc. SPIE 2776, Developments in Optical Component Coatings, (19 August 1996); https://doi.org/10.1117/12.246842
PROCEEDINGS
9 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Interference Coatings - Practical Considerations
Proceedings of SPIE (February 28 1974)
Optical thin films for high power LD pumped Nd ...
Proceedings of SPIE (January 31 2006)
Measurement Techniques For Optical Coatings
Proceedings of SPIE (June 29 1989)
Narrowband mirrors for a new type 1300 nm He Ne...
Proceedings of SPIE (September 29 1996)

Back to Top