Investigation of laser ablated plumes using fast photography

Author

Misra, A. ; Thareja, R.K.

Author_Institution

Dept. of Phys., Indian Inst. of Technol., Kanpur, India

Volume

27

Issue

6

fYear

1999

fDate

12/1/1999 12:00:00 AM

Firstpage

1553

Lastpage

1558

Abstract

Fast photography is used to investigate the expansion dynamics of the laser ablated plasmas in various ambient atmospheres and laser energies. Dependence of plasma parameters such as velocity, temperature, density, and pressure on time and ambient atmosphere is presented. The measured vapor pressure and temperature decrease with the increase in ambient gas pressure. The images of the expanding plumes are used to locate the shocked region and hence to estimate the plasma parameters in the shocked regime. The calculated plasma parameters are used to optimize target-substrate distance, a key parameter for laser ablation deposition of thin films

Keywords

laser ablation; plasma density; plasma diagnostics; plasma pressure; plasma production by laser; plasma shock waves; plasma temperature; ambient atmosphere; ambient atmospheres; expansion dynamics; fast photography; laser ablated plasmas; laser ablated plumes; laser ablation deposition; laser energies; plasma density; plasma parameters; plasma pressure; plasma temperature; plasma velocity; shocked regime; shocked region; target-substrate distance; thin films; time dependence; vapor pressure; Atmosphere; Atmospheric measurements; Gas lasers; Parameter estimation; Photography; Plasma density; Plasma measurements; Plasma temperature; Pressure measurement; Temperature dependence;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.808925

Filename

808925