Why laser cutting glass become more and more popular today?

Unlike metal cutting, it primarily relies on high energy beams to melt materials, laser cutting of glass takes advatange of glass' inherent brittleness. It can be identified into 2 main technicals:

1.Controlled frature method(Traditional CO₂ Laser)

It uses a CO₂ Laser(wavelength: 10.6um to strike the glass surface, then rapid cooling of the heated area immediatey with a stream o cooling gas. It resulting thermal stress which caused by expansion and contraction: Guides the crack to propagate precisely along the intended path that seperate the glass. This way has lower equipment cost and suitable for straight line cutting of thicker glass sheets.

2.Ultrafast laser filamentation cutting(Mainstream technology)

It's the most advanced and widely adopted technique in the industry, this method uses picosecond or femtosecond ultrafast lasers to focus energy inside the glass through an optical phenomenon, which known as the nonlinear kerr effect. The laser creates a microscopic filament(or material modification channel) within the glass-Usually only 1-5um in diameter but spanning several millimeters in depth. Subsequently by applying mechanical force or CO₂ laser heating, the glass can precisely seperated along this filament path.