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بررسی خواص کانونی تیغه منطقه فرنل شطرنجی
Investigation of focal properties of checkerboard Fresnel zone plate
تخصصی
Special
پژوهشي
Research
<strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">در</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> این</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> مقاله</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">، </span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">تیغه</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> منطقهای</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> فرنل</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> شطرنجی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> معرفی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> میشود </span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">و</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> خواص</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> کانونی آ</span></span></strong><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">ن</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> مورد</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> بررسی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> قرار</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> میگیرد</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">.</span></span></strong> <strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">برای اینکار، سه تیغه</span></span></strong><span dir="LTR">­</span><span b="" nazanin="" style="font-family: "> منطقهای</span> <strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">شناختهشده دیگر دایرها</span></span></strong><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">ی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> ، </span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">صلیبی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> و</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> مربعی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> را هم در نظر میگیریم. سپس تابع پخشیدگی نقطهایی این چهار عنصر را با استفاده از شبیهسازی محاسبه کرده و پهنای آنها را با هم مقایسه میکنیم. </span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">نشان</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> میدهیم</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> که</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> بیشینه</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> شدت</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> عبوری</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> شطرنجی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> از</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> فرنل</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> دایره</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">ای</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> کمتر</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> و</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> از</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> فرنل</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> صلیبی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> و</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> مربعی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> بیشتر</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> است.</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> همچنین</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> پهنای</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> شدت</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> عرضی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> در</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> کانون</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> فرنل</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> شطرنجی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> کمتر</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> از</span></span></strong><span dir="LTR"> ­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;">سه</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> عنصر</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> پراشی</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> مورد</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> نظر</span></span></strong><span dir="LTR">­</span><strong><span style="font-family:B Nazanin;"><span style="font-size:11.0pt;"> است. در نهایت هم برای راستیآزمایی نتایج شبیهسازی، آزمایشات متناظر را طراحی و انجام میدهیم. نشان داده میشود که نتایج تجربی در توافق خوبی با دادههای شبیهسازی هستند.</span></span></strong>
In­ this ­paper<span dir="RTL">و</span> ­­checkerboard ­zone ­plate ­is introduced, ­and­ its­ focusing ­properties­ are­ investigated­. To this end, three other known zone plates, circular, cross, and square zone plates, are also considered. After that, we compute their point spread functions and compare them together. We demonstrate that the­ maximum transmitted intensity ­in the ­checkerboard­ is ­less ­than ­that of the ­circular­ and higher­ than either ­cross ­and square.­ Moreover­,­ the­ width ­of ­the­ checkerboard point spread function transverse­ intensity­ is less­ than that of ­ other­ considered­ elements. Finally, the corresponding experiments are considered to verify the simulation results. It is shown that the experimental results are in good agreement with simulation data.
پراش, پراش فرنل, تیغه منطقهای فرنل, فرنل شطرنجی
Diffraction, Diffraction Fresnel, Fresnel zone plate, chess Fresnel
450
453
http://opsi.ir/browse.php?a_code=A-10-1-2379&slc_lang=fa&sid=1
Arash
Sabatyan
آرش
ثباتیان
10031947532846009678
10031947532846009678
Yes
Physics Department, Faculty of Sciences, Urmia University, Urmia
ارومیه، دانشگاه ارومیه، دانشکده ارومیه، گروه فیزیک
Behnaz
Roozbeh
بهناز
روزبه
10031947532846009679
10031947532846009679
No
Physics Department, Faculty of Sciences, Urmia University, Urmia
ارومیه، دانشگاه ارومیه، دانشکده ارومیه، گروه فیزیک