نوع مقاله : پژوهشی

نویسندگان

1 استادیار، گروه فیزیک، دانشگاه پیام نور، تهران، ایران.

2 گروه فیزیک، دانشکده علوم، تهران، ایران

چکیده

در این مطالعه رفتار نوری یک ساختار سه‌لایه فوتونی متشکل از صفحات گرافنی با ویژگی‌های هذلولوی و محور نوری مایل در حوزه فرکانسی تراهرتز مورد ارزیابی قرار گرفته است. تحلیل پدیده‌ها بر پایه مدل تقریب محیط موثر و رویکرد ماتریس انتقال امواج صورت گرفت. بررسی‌ها نشان داد که تغییر در پارامترهایی نظیر اندازه پتانسیل شیمیایی گرافن، ضخامت لایه‌های دی‌الکتریک و زاویه انحراف محور نوری می‌تواند پاسخ‌های جذب و انتقال انرژی را در هر دو گونه قطبش موج فرودی دستخوش تغییر سازد. نتایج حاکی از آن است که در یکی از قطبشهای عرضی، تغییر زاویه محور نوری نقشی تعیین‌کننده ندارد، در حالی که افزایش ضخامت صفحات دی‌الکتریک‌های اول و سوم در ساختار مورد مطالعه، باعث محدود شدن پهنای ناحیه عبور برای هر دو نوع قطبش موج فرودی می‌شود.

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