Analysis of plasma profile over KTiOAsO4 surface produced by 532 and 1064 nm laser radiations

作者：Sun Yuming^*; Chen Ming; Li Yufei; Qi Huanjun; Zhao Mingwen; Liu Xiangdong

来源：Journal of Applied Physics, 2008, 104(12): 123303.

DOI：10.1063/1.3040155

• plasma diagnostics
• plasma production by laser
• plasma-wall interactions
• potassium compounds
• pulsed laser deposition
• thin films

Optical emission studies are carried out on the plasma generated by nanosecond radiation of the 532 and 1064 nm lasers on KTiOAsO4 (KTA) samples with the intensity of 10(8)-10(9) GW/cm(2). Our studies indicate that the amount of evaporated matter in plasma evolution depends on the laser wavelength. The dimension of the self-regulating region shows a clear laser-intensity dependence, which increases from 3 mm at 0.22 GW/cm(2) to 8.5 mm at 1.72 GW/cm(2). This work is expected be helpful for optimizing the experimental parameters of growing KTA thin films using pulsed laser deposition.

• 出版日期2008-12-15
• 单位山东大学