Abstract
Ablation of silicon sample in air under irradiance of single anddouble laser pulses with wavelengths 355 and 532 nm was studied by means ofoptical and scanning electron microscopy, raman spectroscopy, profilometryof laser craters as well as video registration of plasma's plume radiationin time. Dependence of specific sample's material removal on laser fluenceand time interval between coupled pulses of bichromatic laser irradiance wasestablished. Spallation of silicon was found in broad range of irradianceparameters and parameters of craters formed by ablation and spallation underthe action of bichromatic laser radiation were determined. Keywords: nanosecond laser ablation, specific mass removal, surface modification, laser plasma dynamics, crater formation, spallation\
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