CAJ | 학술논문

合成了两种新的金属双噻吩类复合物:(苄基三乙基铵)双(1,3-二硫杂环戊烯-2-硫酮-4,5-二巯基)-金(BTEAADT)和(苄基三乙基铵)双(1,3-二硫杂环戊烯-2-硫酮-4,5-二巯基)-镍(BTEANDT).采用Z扫描方法,在皮秒脉冲下,分别测试了两种材料的乙腈溶液在532和1064 nm的三阶非线性光学特性.Z扫描的结果表明,BTEAADT的乙腈溶液在532 nm具有反饱和吸收效应,在1064 nm非线性吸收效应可以忽略且在两种波长都有自散焦效应,三阶非线性折射率为负值.BTEANDT的乙腈溶液在532 nm非线性吸收效应町以忽略,在1064 nm具有饱和吸收效应且在两种波长都有自聚焦效应,三阶非线性折射率为正值.分析了造成这种差异的原因.经过计算得到了两种材料在532和1064 nm的三阶非线性折射率,三阶非线性吸收系数,三阶非线性极化率和超极化率.BETAADT的非线性折射率在532 nm为-1.685× 10-18 m2· W-1,在1064 nm为-1.459× 10-18m2·W-1; BTEANDT的非线性折射率在532 nm为1.452× 10-18 m2· W-1,在1064 nm为7.311 ×10-18 m2·W-1.两种材料的三阶非线性吸收系数,三阶非线性极化率和超极化率的数量级分别是10-11 m·W-1,10-13 esu和10-31esu.结果表明这两种材料在非线性光学领域有潜在的应用价值.
합성료량충신적금속쌍새분류복합물:(변기삼을기안)쌍(1,3-이류잡배무희-2-류동-4,5-이구기)-금(BTEAADT)화(변기삼을기안)쌍(1,3-이류잡배무희-2-류동-4,5-이구기)-얼(BTEANDT).채용Z소묘방법,재피초맥충하,분별측시료량충재료적을정용액재532화1064 nm적삼계비선성광학특성.Z소묘적결과표명,BTEAADT적을정용액재532 nm구유반포화흡수효응,재1064 nm비선성흡수효응가이홀략차재량충파장도유자산초효응,삼계비선성절사솔위부치.BTEANDT적을정용액재532 nm비선성흡수효응정이홀략,재1064 nm구유포화흡수효응차재량충파장도유자취초효응,삼계비선성절사솔위정치.분석료조성저충차이적원인.경과계산득도료량충재료재532화1064 nm적삼계비선성절사솔,삼계비선성흡수계수,삼계비선성겁화솔화초겁화솔.BETAADT적비선성절사솔재532 nm위-1.685× 10-18 m2· W-1,재1064 nm위-1.459× 10-18m2·W-1; BTEANDT적비선성절사솔재532 nm위1.452× 10-18 m2· W-1,재1064 nm위7.311 ×10-18 m2·W-1.량충재료적삼계비선성흡수계수,삼계비선성겁화솔화초겁화솔적수량급분별시10-11 m·W-1,10-13 esu화10-31esu.결과표명저량충재료재비선성광학영역유잠재적응용개치.
Two novel 1,3-dithiole-2-thione-4,5-dithiolate compounds,benzyltriethylamine bis(2-thioxo-1,3-dithiole-4,5-dithiolato) aurate(Ⅲ) (BTEAADT) and benzyltriethylamine bis(2-thioxo-1,3-dithiole-4,5-dithiolato) nickel(Ⅲ) (BTEANDT),were prepared and their optical nonlinearities in acetonitrile solutions at 532 and 1064 nm were investigated using the Z-scan technique with picosecond laser pulses.The Z-scan curves revealed that BTEAADT exhibited mainly reverse saturable absorption at 532 nm,negligible nonlinear absorption at 1064 nm,and a self-defocusing effect at both wavelengths,which meant that the third-order nonlinear refractive index was negative.BTEANDT exhibited saturable absorption at 1064 nm,negligible nonlinear absorption at 532 nm,and a self-focusing effect at both wavelengths,which meant that the third-order nonlinear refractive index was positive.The reason for these different phenomena was analyzed.The third-order nonlinear refractive index,the third-order nonlinear absorption coefficient,the third-order nonlinear susceptibility,and the hyperpolarizability were obtained at 532 and 1064 nm.The nonlinear refractive indices were -1.685× 10-18 m2· W-1 at 532 nm and -1.459× 10-18 m2· W-1 at 1064 nm for BTEAADT and 1.452 × 10-18 m2· W-1 at 532 nm and 7.311 × 10-18 m2· W-1 at 1064 nm for BETANDT.The magnitudes of the third-order nonlinear absorption coefficient,the third-order nonlinear susceptibility,and the hyperpolarizability were 10-11 m· W-1,10-13 esu,and 10-31 esu,respectively.All these results suggest that these materials are promising candidates for application in the nonlinear optical area.