Sol-Gel Derived Optical Coatings

Period of Performance: 04/07/1997 - 07/07/1999


Phase 2 SBIR

Recipient Firm

Tpl, Inc.
3921 Academy Parkway North, NE
Albuquerque, NM 87109
Principal Investigator

Research Topics


Thin film optical devices are comprised because they are constrained by the properties of available materials. Sol-gel derived films are an effective solution because they remove this constraint and produce glass films with tailored refractive index to match those required by the optimal design. Therefore, thin film optics can be made with better performance and possibly fewer layers than are currently available.The objective of the proposed Phase II program is to develop sol-gel derived films for thin film optics. The innovation is that glass films are tailored to meet specific requirements. Spectrophotometric, scattering, and film stress measurement performed during Phase I demonstrated the feasibility of sol-gel derived materials for optical applications.TPL will work on optical designs specified by Phillips Laboratory's Laser and Imaging Directorate. Witness samples will be made of each laser and measured by ellipsometry for film thickness and refractive index. Stacks of films will be built up using sol-gel derived coating materials. Prototypes will be made on hihgly polished silica substrates and will be characterized by spectrophotometry and scattering measurements.TPL has extensive experience and resources in sol-gel technology. The PI and consultant are pioneering researchers in sol-gel processing and sol-gel derived optical devices.