光激發鈣鈦礦奈米晶體垂直共振腔面射型雷射之研究特性

Abstract

在本論文研究中，我們主要探討布拉格反射鏡與鈣鈦礦之應用，我們利用布拉格反射鏡高反射原理，此反射鏡對於355nm處的光反射率極低，我們在反射鏡中加入發光材料鈣鈦礦，發光波長約落在515nm，作為反射鏡之共振腔，使用355nm脈衝雷射激發使其生成雷射，藉由增強脈衝雷射強度，觀察其modes PL強度及半峰全寬(FWHM)變化。另外我們也比較在鈣鈦礦加入反射鏡中時有無進行轉塗布的差異。我們發有使用旋轉塗佈將鈣鈦礦加入在布拉格反射鏡中比起未使旋轉塗佈機，且其modes PL強度有減弱及modes數量也比未使旋轉塗佈機來的少。實驗結果證明了將鈣鈦礦加在於布拉格反射鏡中做為cavity，經脈衝雷射激發的確能有效而生成雷射。In this study, we mainly study the application of Distributed Bragg Reflector and perovskite, we use the Distributed Bragg Reflector mirror’s high reflection principle, this reflector has lowest reflectivity at 355~358nm region, we use the Perovskite as cavity sandwiched in Distributed Bragg Reflector mirror. The spectrum of Perovskite is located at 515nm. We used 355nm pulsed laser as pumping energy. Observe each modes PL intensity and full width at half maximum (FWHM) while increasing the pumping energy. In addition, we also compared the perovskite been added on the reflector within/without spin-coating process. We found within spin-coating process the modes PL intensity and modes number become less than without spin-coating process. The study results showed achievement of laser Generate Phenomenon by added perovskite as cavity in Distributed Bragg Reflector which excitation by the pulse laser pumping.