Understanding And Specifying LIDT Of Laser Components

Laser-induced damage threshold (LIDT) is a critical specification for laser optics, determining the maximum laser fluence or intensity an optic can tolerate before damage occurs. LIDT is influenced by factors such as beam diameter, pulse duration, and intensity profile. For pulsed lasers, pulse duration and fluence are key considerations, while for continuous wave (CW) lasers, power density and intensity profile are important. Damage mechanisms include thermal effects, dielectric breakdown, and defect-induced absorption. LIDT scaling for different wavelengths and pulse durations is possible but should be done cautiously. It's essential to consider the specific laser parameters and optic characteristics to ensure safe and reliable operation of laser systems.