Experimental study on reflection of high-intensity nanosecond Nd:YAG laser pulses in ablation of metals
| Autor: | L. de la Cruz May, O. Benavides, J.A. Lugo Jimenez, A. Flores Gil |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Laser ablation business.industry Mechanical Engineering medicine.medical_treatment Drop (liquid) Analytical chemistry Nanosecond Ablation Laser Fluence Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Optics law Nd:YAG laser medicine Irradiation Electrical and Electronic Engineering business |
| Zdroj: | Optics and Lasers in Engineering. 68:83-86 |
| ISSN: | 0143-8166 |
| Popis: | The total reflectivity of tin and magnesium in ablation by nanosecond Nd:YAG laser pulses in air is studied. It was found that the high initial reflectivity of the studied metals undergoes a significant drop to values of 0.11 for Sn and 0.16 for Mg within a laser fluence range between about 0.8 and 11 J/cm 2 . These reduced reflectivity values remain virtually unchanged with further increasing laser fluence. This study shows that a significant reflectivity decrease of the studied metals is caused by plasma formation in front of the irradiated surface. Below the plasma formation threshold, the reflectivity of the studied metals is observed to be virtually independent of laser fluence, indicating a small role of Drude׳s temperature effect on the reflectivity of the studied samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect