نتایج جستجو برای: لیزر krf
تعداد نتایج: 3008 فیلتر نتایج به سال:
Gaseous monochlorobenzene was irradiated with KrF excimer laser (248 nm) under reduced pressure. The photodecomposition was an apparent first order reaction. When the system contained no additive gas, the photolysis was found to give benzene (conversion yield: 49%) in the gas phase and many unidentified products in the solid phase. On the other hand, in the presence of oxygen, carbon dioxide (1...
J. D. Sethian, M. Friedman, J. Giuliani, R.H. Lehmberg, M. Myers, S.P. Obenschain, P. Kepple, Plasma Physics Division, Naval Research Laboratory, Washington, DC M. Wolford, Science Applications International, Corporation, McLean, VA F. Hegeler, Commonwealth Technology, Inc, Alexandria, VA S. Swanekamp, JAYCOR, Alexandria, VA D. Weidenheimer, Titan-Pulse Sciences Division, San Leandro, CA D. Wel...
Investigations of emission of harmonics from argon gas jet irradiated by 700 fs, 5 mJ pulses from a KrF laser are presented. Harmonics conversion was optimized by varying the experimental geometry and the nozzle size. For the collection of the harmonic radiation silicon and solar-blind diamond semiconductor detectors equipped with charge preamplifiers were applied. The possibility of using a si...
Transparent, electrically conductive and c-axis oriented ZnO thin films have been grown by the pulsed laser deposition (PLD) technique on silicon and Coming glass substrates employing either a KrF excimer laser (3. = 248 nm) or a frequency-doubled Nd:YAG laser (3. = 532 rim). The crystalline structure, surface morphology, optical and electrical properties of the deposited films were found to de...
Titanium oxide thin film, fabricated with tetraisopropyltitanate and oxygen by electron cyclotron resonance-plasma-enhanced chemical vapor deposition, is investigated as a potential candidate for the antireflective layer in KrF excimer laser (248-nm) lithography. The oxygen flow-rate dependence of the optical properties such as the refractive index (n) and the extinction coefficient (k) of the ...
Laser drilling becomes of increasing importance when hole diameter is in the range of 10 to 50 μm, for which conventional alternative approaches are becoming difficult and cost inefficient. Furthermore, it is viewed as the technique of choice for a number of composite materials and hard materials which are not readily processed at the microscopic level by contact mechanical tools. We have demon...
In the attempt to find the appropriate micromanufacturing technology of PMN-PT (lead magnesium niobate–lead titanate) piezo material, whose MEMS-related applications look promising, two methods are investigated: excimer laser ablation (using KrF gas) and inductively coupled plasma (ICP) dry etching, also known as DRIE (using Ar/C4F8 gases). The paper quantitatively reports the optimal parameter...
آسیب‌های حاصل از لیزر در جبهه‌های جنگ، یک تهدید حقیقی و قابل توجه است. در حال حاضر، در جنگ‌های مدرن از لیزر جهت تعیین مسافت، هدف‌گیری، هدف‌یابی و تخریب هدف استفاده می‌شود. نیروهای نظامی مجهز به افزارهایی هستند که ممکن است به‌صورت اتفاقی منجر به کورشدن دایمی افراد گردند. همچنین ممکن است، لیزر به‌عنوان سلاح‌های ضد نفر مورد استفاده قرار گیرد ، چرا که با کاهش قدرت بینایی سربازان موجب اختلال در ک...
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