應用於光子晶體之熱輻射特性變化

Abstract

This thesis explores the thermal radiation intensity modication by photonic crystals (PhC) when elevated to high temperatures. The modication of the density of states by the PhC creates a band gap that suppresses thermal radiation in that frequency band. Such suppressions lead to enhancements in radiation at frequencies outside of the band gap. The thermal radiation spectrum can be estimated using the direct and indirect method. The direct method involves the density of states while the indirect method is based on Kirchho's law of detailed balance for thermal equilibrium. Both methods are shown to be able to predict the thermal radiation power spectrum for a one dimensional (1D) PhC. Additionally, a micro cavity three-dimensional PhC involving a woodpile structure coupled with a 1D PhC is simulated using the software Computer Simulation Technology (CST).

This thesis explores the thermal radiation intensity modication by photonic crystals (PhC) when elevated to high temperatures. The modication of the density of states by the PhC creates a band gap that suppresses thermal radiation in that frequency band. Such suppressions lead to enhancements in radiation at frequencies outside of the band gap. The thermal radiation spectrum can be estimated using the direct and indirect method. The direct method involves the density of states while the indirect method is based on Kirchho's law of detailed balance for thermal equilibrium. Both methods are shown to be able to predict the thermal radiation power spectrum for a one dimensional (1D) PhC. Additionally, a micro cavity three-dimensional PhC involving a woodpile structure coupled with a 1D PhC is simulated using the software Computer Simulation Technology (CST).