Lu Wu, Zhong Bo, Ma Dongge
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
Appl Opt. 2004 Sep 10;43(26):5074-8. doi: 10.1364/ao.43.005074.
The amplified spontaneous emission and gain characteristics of various fluorescent dyes, 2-(1,1-dimethylethyl)-6(2-(2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H-benzo[ij] quinolizin-9-1)ethenyl)-4H-pyran-4-ylidene) propanedinitrile (DCJTB) and 4-dicyanomethylene-2-methyl-6-(p-dimethyl-aminostyryl)-4H-pyran (DCM), doped in polystyrene (PS) matrices were studied and compared. It was found that DCJTB has a larger net gain, 40.72 cm(-1), a lower loss, 2.49 cm(-1), and a lower threshold, 0.16 (mJ/ pulse)/cm2, than DCM, which has a net gain of 11.95 cm(-1), a loss of 9.25 cm(-1), and a threshold of 4(mJ/pulse)/cm2. The improvement of performance in DCJTB PS films is attributed to the larger free volume of DCJTB caused by the introduction of steric spacer groups into the DCJTB molecule.
研究并比较了掺杂在聚苯乙烯（PS）基质中的各种荧光染料，即2-(1,1-二甲基乙基)-6(2-(2,3,6,7-四氢-1,1,7,7-四甲基-1H,5H-苯并[ij]喹嗪-9-1)乙烯基)-4H-吡喃-4-亚基)丙二腈（DCJTB）和4-二氰基亚甲基-2-甲基-6-(对二甲氨基苯乙烯基)-4H-吡喃（DCM）的放大自发辐射和增益特性。结果发现，DCJTB的净增益更大，为40.72 cm⁻¹，损耗更低，为2.49 cm⁻¹，阈值更低，为0.16（mJ/脉冲）/cm²，而DCM的净增益为11.95 cm⁻¹，损耗为9.25 cm⁻¹，阈值为4（mJ/脉冲）/cm²。DCJTB PS薄膜性能的改善归因于在DCJTB分子中引入空间间隔基团导致DCJTB具有更大的自由体积。
