Why Can Lasers Engrave Inside Glass Without Breaking It?
Glass is fragile and prone to cracking. Traditional machining easily damages it. This limits precision processing. Laser engraving1 solves this by modifying only the internal structure without stressing the surface. Lasers can engrave inside glass because energy is concentrated at a focal point, triggering nonlinear absorption2 and localized micro-fractures3 without affecting the surrounding material. To […]
