激光技术
激光技術
격광기술
LASER TECHNOLOGY
2010年
1期
48-52
,共5页
光电子学%荧光强度%能量转移%浓度猝灭
光電子學%熒光彊度%能量轉移%濃度猝滅
광전자학%형광강도%능량전이%농도졸멸
optoelectronics%fluorescence properties%energy migration%concentration quenching
为了研究Nd~(3+)的摩尔分数对1.3μm处荧光的影响,采用常规的熔融方法制备了钕离子掺杂的0.70TeO_2-(0.30-x)WO_3-xNd_2O_3 (摩尔分数x为0.001,0.003,0.005,0.007,0.01)玻璃系统,得到了Nd~(3+) 1.3μm荧光光谱,同时还研究了荧光峰值波长的有效线宽和受激发射截面与Nd~(3+)摩尔分数的关系.根据Dexter能量转移理论计算了Nd~(3+)在碲酸盐玻璃中能量转移参量C_(d,d)(~4F_(3/2),~4I_(9/2)→~4I_(9/2),~4F_(3/2))和C_(d,a)(~4F_(3/2),~4I_(9/2)→~4I_(15/2),~4I_(15/2)和~4F_(3/2),~4I_(9/2)→~4I_(13/2),~4I_(15/2))值和相应发生浓度猝灭的临界距离R_(d,d)和R_(d,a).结果表明,随着Nd~(3+)的掺杂摩尔分数增加,荧光强度也逐渐增加,到0.005时达到最大:随后当Nd~(3+)的摩尔分数大于0.005时,荧光强度逐渐降低.
為瞭研究Nd~(3+)的摩爾分數對1.3μm處熒光的影響,採用常規的鎔融方法製備瞭釹離子摻雜的0.70TeO_2-(0.30-x)WO_3-xNd_2O_3 (摩爾分數x為0.001,0.003,0.005,0.007,0.01)玻璃繫統,得到瞭Nd~(3+) 1.3μm熒光光譜,同時還研究瞭熒光峰值波長的有效線寬和受激髮射截麵與Nd~(3+)摩爾分數的關繫.根據Dexter能量轉移理論計算瞭Nd~(3+)在碲痠鹽玻璃中能量轉移參量C_(d,d)(~4F_(3/2),~4I_(9/2)→~4I_(9/2),~4F_(3/2))和C_(d,a)(~4F_(3/2),~4I_(9/2)→~4I_(15/2),~4I_(15/2)和~4F_(3/2),~4I_(9/2)→~4I_(13/2),~4I_(15/2))值和相應髮生濃度猝滅的臨界距離R_(d,d)和R_(d,a).結果錶明,隨著Nd~(3+)的摻雜摩爾分數增加,熒光彊度也逐漸增加,到0.005時達到最大:隨後噹Nd~(3+)的摩爾分數大于0.005時,熒光彊度逐漸降低.
위료연구Nd~(3+)적마이분수대1.3μm처형광적영향,채용상규적용융방법제비료녀리자참잡적0.70TeO_2-(0.30-x)WO_3-xNd_2O_3 (마이분수x위0.001,0.003,0.005,0.007,0.01)파리계통,득도료Nd~(3+) 1.3μm형광광보,동시환연구료형광봉치파장적유효선관화수격발사절면여Nd~(3+)마이분수적관계.근거Dexter능량전이이론계산료Nd~(3+)재제산염파리중능량전이삼량C_(d,d)(~4F_(3/2),~4I_(9/2)→~4I_(9/2),~4F_(3/2))화C_(d,a)(~4F_(3/2),~4I_(9/2)→~4I_(15/2),~4I_(15/2)화~4F_(3/2),~4I_(9/2)→~4I_(13/2),~4I_(15/2))치화상응발생농도졸멸적림계거리R_(d,d)화R_(d,a).결과표명,수착Nd~(3+)적참잡마이분수증가,형광강도야축점증가,도0.005시체도최대:수후당Nd~(3+)적마이분수대우0.005시,형광강도축점강저.
In order to study the effect of Nd~(3+) concentration on the fluorescence property at 1.3μm,Nd_2O_3 -doped 0.70TeO_2-(30-x)WO_3-xNd_2O_3(mole fraction x is 0.001,0.003,0.005,0.007,0.010) tellurite glass was prepared by means of the conventional melt-quenching method.The fluorescence spectra were obtained.The dependence of the effective bandwidth and the stimulated emission cross-sections of ~4F_(3/2)→~4I_(13/2) transition on Nd~(3+)concentration was studied.Based on the electric dipole-dipole interaction theory,the interaction parameters,Cd,d,for the energy migration rate ~4F_(3/2),~4I_(9/2)→~4I_(9/2),~4F_(3/2) and Cd,a,for cross relaxation rate ~4F_(3/2),~4I_(9/2)→~4I_(15/2),~4I_(15/2),and/or ~4F_(3/2),~4I_(9/2)→~4I_(13/2),~4I_(15/2) in tellurite glass are about 10.6×10~(-40)cm~6/s and 2.80×10~(-40)cm~6/s,respectively.The result shows that the fluorescence intensity drastically increases and has a maximum around 0.005(mole fraction) Nd_2O_3 and decreases with increase of the Nd_2O_3 concentration.
