ROOM-TEMPERATURE ELECTRONIC OPTICAL NONLINEARITIES IN POLYCRYSTALLINE ZNSE

被引：0
|
作者：
JI, W [1 ]
MILWARD, JR [1 ]
KAR, AK [1 ]
WHERRETT, BS [1 ]
PIDGEON, CR [1 ]
机构：
[1] HERIOT WATT UNIV, DEPT PHYS, EDINBURGH EH14 4AS, MIDLOTHIAN, SCOTLAND
来源：
INSTITUTE OF PHYSICS CONFERENCE SERIES | 1989年 / 103期
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D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have observed self-defocussing of nanosecond laser pulses in ZnSe near the band gap. The refractive cross-sections have been calculated from this in the wavelength range 470-476 nm. We have also carried out an experiment on degenerate four-wave mixing to calculate the effective nonlinear cross-sections in the same spectral range. The refractive cross-section has been measured to be as large as approximately 5 x 10(-20) cm3. Comparison with the three level band-filling theory indicates that the contribution from the dynamic Burstein-Moss shift dominates the refractive cross-section.
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页码：69 / 74
页数：6
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