DISPERSION OF THE INDUCED OPTICAL NONLINEARITY IN RHODAMINE 6G DOPED BORIC-ACID GLASS

被引：0
|
作者：
RAO, KD [1 ]
SHARMA, KK [1 ]
机构：
[1] INDIAN INST TECHNOL,CTR LASER TECHNOL,KANPUR 208106,UTTAR PRADESH,INDIA
来源：
OPTICS COMMUNICATIONS | 1995年 / 119卷 / 1-2期
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D O I：
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中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The spectral dispersion of the induced optical nonlinearity has been investigated in an optically thick sample of rhodamine 6G dye doped boric acid glass. The light-induced changes in the absorption coefficient were measured over a wide range of frequencies. The corresponding changes in the phase dispersion were calculated by the Kramers-Kronig transformation. The changes in the complex refractive index so obtained were used to calculate the diffraction efficiency within Kogelnik's model. The results show a good agreement with the measured diffraction efficiency of a nondegenerate probe, The analysis revealed the presence and the significant role of excited state absorption in the dynamic grating diffraction process.
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页码：132 / 138
页数：7
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