期刊
OPTICAL REVIEW
卷 17, 期 3, 页码 309-312出版社
OPTICAL SOC JAPAN
DOI: 10.1007/s10043-010-0055-y
关键词
pulsed laser deposition; zinc oxide; plasma plume; ablation
类别
The dynamic behaviors and optical properties of a ZnO plasma plume produced by pulsed laser ablation using a Nd:YAG laser (wavelength: 532 nm, pulse width: 3 ns) were studied by fast photography using a commercial gated charge coupled device (CCD) camera linked with a delay circuit and by optical emission spectroscopy at various ambient oxygen pressures. Fast photography was conducted with a resolving power of 0.25 mu s and the expansion behaviors of the laser ablation plume were observed. Plasma plume expansion velocity decreased with oxygen partial pressure. The flow of the plasma plume in the early stage of expansion of up to 3 ms agreed well with the drag model.
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