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تسجيل مستخدم جديدبعض الميزات الجديدة التجريبية لتأثير اللهب الفوتوني
Some new experimental photonic flame effect features
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تأليف
N.V.Tcherniega
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أعرضت النتائج الطيفية والطاقية والزمنية للإشعاع في حالة تأثير اللهب الفوتوني. وضعت الأوبال الصناعية على لوحة الكوبريون عند درجة حرارة نقطة غليان الثلج المذاب (77 درجة كلورسيوس) وتشعلت ببالغ الطول بالإشعاع الليزري الروبي النانوثانية، وظهرت الإشعاعات اللامينسينسية المرئية مع التأخير الزمني في عينات أخرى من الأوبال الصناعية الموضوعة على نفس اللوحة. وفي حالة وضع السائل الغير الخطي داخل الأوبال، فإن الحد الأدنى للإشعاع اللامينسينسي المرئي تقلص وتتغير توزيع المنطقة المشعة على سطح الأوبال. وفي حالة وضع السوائل الغير الخطية المجمدة على لوحة الكوبريون، ظهرت الإشعاعات اللامينسينسية الزرقاء المشعة بالطول البالغ في السوائل المجمدة. وكانت الخصائص الزمنية لهذه الإشعاعات تقريبا متشابهة مع ماتريس الأوبال.
The results of the spectral, energetical and temporal characteristics of radiation in the presence of the photonic flame effect are presented. Artificial opal posed on Cu plate at the temperature of liquid nitrogen boiling point (77 K) being irradiated by nanosecond ruby laser pulse produces long- term luminiscence with a duration till ten seconds with a finely structured spectrum in the the antistocks part of the spectrum. Analogous visible luminescence manifesting time delay appeared in other samples of the artificial opals posed on the same plate. In the case of the opal infiltrated with different nonlinear liquids the threshold of the luminiscence is reduced and the spatial disribution of the bright emmiting area on the opal surface is being changed. In the case of the putting the frozen nonlinear liquids on the Cu plate long-term blue bright luminiscence took place in the frozen species of the liquids. Temporal characteristics of this luminiscence are nearly the same as in opal matrixes.
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اقرأ أيضاً
We observed new effect which we called photonic flame effect (PFE). Several 3-dimensional photonic crystals (artificial opals) were posed on Cu plate at the temperature of liquid nitrogen (77K). Typical distance between them was 1-5 centimeters. Long
-continued optical luminescence was excited in one of them by the ruby laser pulse. Analogous visible luminescence manifesting time delay appeared in other samples of the crystals. Experiments were realized for opal crystals and for nanocomposites (opals filled with nonlinear liquids).
Novel nonlinear optical phenomena - photonic flame effect (PFE) and stimulated globular scattering (SGS) are discussed.PFE consisted in the appearance of the few seconds duration emission in blue-green spectral range under 20 ns ruby laser pulse exci
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Based on the recently proposed concept of effective gauge potential and magnetic field for photons, we numerically demonstrate a photonic de Haas-van Alphen effect. We show that in a dynamically modulated photonic resonator lattice exhibiting an effe
ct magnetic field, the trajectories of the light beam at a given frequency have the same shape as the constant energy contour for the photonic band structure of the lattice in the absence of the effective magnetic field.
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