论文信息 - Absorption phenomena in metal drilling with Nd-lasers

Absorption phenomena in metal drilling with Nd-lasers

An experimental investigation of the breakdown of metal reflectivity under intense radiation from an Nd-laser is presented. It includes time resolved measurements of the hemispherical reflectivity and of the pertinent target damage. The experiments show the occurrence of an absorbing layer that couples up to 80 percent of the light power into the condensed metal. The layer is formed when the surface temperature corresponds to several atmospheres of vapor pressure.

[1] M. Allmen. Laser drilling velocity in metals , 1976 .

[2] S. Metz,et al. Mechanical response and thermal coupling of metallic targets to high‐intensity 1.06‐μ laser radiation , 1976 .

[3] A. Petrukhin,et al. Experimental investigation of the onset of evaporation and formation of a plasma layer due to interaction between laser radiation and metals in different gases , 1975 .

[4] M. Saifi,et al. Metal reflectivity under high−intensity optical radiation , 1975 .

[5] S. Popov,et al. Appearance of a layer absorbing laser radiation near the surface of a metal target , 1974 .

[6] S. Popov,et al. Formation of a plasma in a vapor layer produced by the action of laser radiation on a solid , 1974 .

[7] Y. Raizer. Reviews of Topical Problems: Propagation of Discharges and Maintenance of a Dense Plasma by Electromagnetic Fields , 1973 .

[8] I. Nemchinov,et al. Sudden Increase in Absorption of Laser Radiation and Associated Gasdynamic Effects , 1969 .

[9] V. Konov,et al. Investigation of low-threshold gas breakdown near solid targets by CO2 laser radiation , 1974 .

[10] U. Korn,et al. Moving heat source dynamics in laser drilling processes , 1974 .

[11] A. Prokhorov,et al. Evaporation of Metallic Targets Caused by Intense Optical Radiation , 1973 .