利用长程表面等离子激元的非线性色散关系测出了半导体掺杂玻璃的非线性热致折射系数.该方法不但可测出非线性热致折射系数的大小和正负,而且还具有较高的精度.

Both the magnitude and the sign of the third order nonlinear refractive coefficients associated with thermal effect in semiconductor-doped glass have been measured using the inte aity-dependent dispersion relation of long-range surface plasmons. Because of the sharp ATE dip of lonf-range surface plasmons, the technique developed by the authors has a good accuracy.