Laser micro-structuring on glass substrates with compensation function for multi-wavelength mixed laser diode module

A glass substrate has excellent optical transmittance for the visible spectrum (400-700 nm). This study used three type glass (D263T?, EAGLE XGo,R, and BK7) for laser micro-structuring in the light compensation technique applied to a multi-wavelength mixed light module. An ultraviolet laser system combined with a high-speed galvanometric scanner was used to fabricate microstructures on the specimen surface. The light compensation chromaticity properties of the microstructures on glass substrates depended on the laser machining conditions. The characteristics of the machined glass were systematically analyzed using a spectrophotometer and charge-coupled device camera. The experimental results demonstrate that the microstructures affected chromaticity under different laser micro-structuring pitches. Copyright ? 2017 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved.