標題: | (RbxCs1-x)GeBr3粉末合成及光學性質之研究X=0 , 1/4 , 2/4 , 3/4 , 1 The Powder Synthesis and Optical Properties of (RbxCs1-x)GeBr3 X=0 , 1/4 , 2/4 , 3/4 , 1 |
作者: | 姜興周 Hsin-Chou Chiang 張振雄 Chen-Shiung Chang 光電工程學系 |
關鍵字: | 非線性;晶體;nonlinear;crystal |
公開日期: | 2006 |
摘要: | 鈣鈦礦結構的三元鹵化物是目前頗受注目的紅外線非線性光學材料。本文是我們利用化學合成的方式合成非線性材料(RbxCs1-x)GeBr3( X = 0 , 0.25 , 0.5 ,0.75 , 1 ),並對其進行特性量測。從XRD及EPMA的量測可知在x=0及x=1時,其量测結果和資料庫及理論模擬相符。晶體藉著紅外線穿透光譜、拉曼光譜量測結果顯示出通光範圍約為(0.6μm~47μm)。由光致發光量測(PL)晶體並估計其能隙。最後利用粉末二倍頻量測得知,在x=1時,並未量測到有效非線性係數,其餘晶體之有效非線性係數分別為4.40、1.96、1.51和1.46。 The Perovskite structure of ternary halides are noticed for nonlinear optical applications in infrared. We have successfully synthesized the new nonlinear materials (RbxCs1-x)GeBr3( X = 0 , 0.25 , 0.5 ,0.75 , 1 ) by using the chemical synthesis method. From the results of XRD and EPMA,we prove that x=0及x=1 results have a good agreement with JCPDS and ab inito. The measurements of FTIR、Raman spectrum reveal the transparency range(0.6μm~47μm). The measurements of PL spectrum reveal the band gap. According to the powder second harmonic generation signals, we obtain the effective nonlinear coefficient 4.40、1.96、1.51、1.46 and 0 . |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009424534 http://hdl.handle.net/11536/81353 |
Appears in Collections: | Thesis |
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