Optical emission spectra of ZnMnO plasma produced by a pulsed laser

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

X-ray Emission Spectra from Laser-produced Cobalt Plasma

Time-resolved optical emission spectroscopy of laser-produced air plasma

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Optical emission spectroscopic study of plasma plumes generated by IR CO2 pulsed laser on carbon targets

Optical emission spectroscopy studies, in the spectral range ultraviolet–visible–near infrared (UV–Vis–NIR), were performed to investigate thermal and dynamical properties of a plume produced by laser ablation of a graphite target. Ablation is carried out using a high-power IR CO2 pulsed laser at λ = 9.621μm, power density ranging from 0.22 to 5.36 GW cm−2 and air pressures around 4 Pa. The str...

Optical emission spectroscopy of oxygen plasma induced by IR CO2 pulsed laser

Laser-induced breakdown (LIB) spectroscopy in oxygen at room temperature and pressures ranging from 4.6 to 75 kPa was studied using a high-power transverse excitation atmospheric CO2 laser (λ = 9.621 and 10.591μm; τFWHM = 64 ns; power densities ranging from 0.87 to 6.31 GW cm−2). The spectrum of the generated plasma is dominated by emission of strong O, O+ and weak O2+ atomic lines. Excitation ...