Energy-Conserving Regimes for Laser Machining of Glass and Ceramic Materials

Analytical relations for calculating the requisite energy density for a prescribed scribing depth are obtained on the basis of a one-dimensional problem of vaporization of an absorbing layer of material with ‘prompt’ deposition of the energy in a laser pulse. These relations make it possible to determine the energy-conserving scribing regimes for glassy and ceramic materials, possessing volume absorption of laser radiation, irradiated by one or two laser pulses. Energy consumption can be reduced by at most 25 – 35%, depending on the dimensionless parameter χ h , by adjusting the machining regime.