CAJ | 학술논문

选择超短泵浦脉冲激励非线性光子晶体点缺陷，研究了THz全光开关的受激响应特性。研究发现这种具有高品质因子的非线性缺陷在脉冲激励下能迅速响应，特别是当激励脉冲功率密度增大到一定值时，脉冲在高功率密度中的响应延时比泵浦脉冲本身的时域线宽还窄，此外从理论上分析了非线性缺陷模在脉冲激励下发生变化的原因，得出响应速度取决于非线性缺陷模频谱展宽程度的结论。
선택초단빙포맥충격려비선성광자정체점결함，연구료THz전광개관적수격향응특성。연구발현저충구유고품질인자적비선성결함재맥충격려하능신속향응，특별시당격려맥충공솔밀도증대도일정치시，맥충재고공솔밀도중적향응연시비빙포맥충본신적시역선관환착，차외종이론상분석료비선성결함모재맥충격려하발생변화적원인，득출향응속도취결우비선성결함모빈보전관정도적결론。
The ultra-short pump pulse is chosen to excite nonlinear photonic crystal defect and the response characteristics of THz all-optical switch is investigated. The results show that the nonlinear defect with high quality factors can respond rapidly under the excita-tion of pulses, especially when the driving pulse power density increases to a value, the response time of the pulse under high-power densities is even shorter than the duration of the pump pulse. In addition, a theoretical analysis of nonlinear defect spectrum is made to the reasons of changes excited by pulses, coming to a conclusion that the response speed depends on the broadening of nonlinearity de-fect spectrum.