Realization of partially transmitted titanium/glass windows using a nanosecond pulsed laser

Titanium has been widely used in aerospace, ocean exploration, and other extreme fields because of its superior physical and chemical properties. In some specific fields, it is necessary to process titanium films to control the optical properties. In this study, we designed and fabricated four kinds of titanium-coated BK7 glass windows by using a weak 532 nm nanosecond pulsed laser and then analyzed their effective transmittance with a digital image processing approach. Finally, the actual effective transmittances of all processed samples were measured by utilizing a well-designed optical system. The results show that the total transmittance of the titanium-coated glass windows is from 5.70% to 48.72%. The processed four types of samples might be applied in different application scenes for the resistance of cosmic radiation. Such special windows we obtained in the study are thought to effectively shield cosmic rays and transmit some visible light at the same time. Our works may open up a new path for the realization of special windows used in some fields such as airline, outer space, scientific research stations at high altitude, etc.