Table 1 Parameter values evaluated from the analyses of ε2 and Imχ(3)(−ω; 0, 0, ω) spectra and other important parameters in Nd2CuO4, Sr2CuO2Cl2, and La2CuO4.

ℏω1 (eV)ℏω2 (eV)ℏγ1 (eV)ℏγ2 (eV)0x1 (Å)1x2 (Å)max|Imχ(3)| (esu)Es (eV)J (meV)dCu─O (Å)
Nd2CuO41.571.340.1820.1960.4653.032.0 × 10−100.23155141.97317
Sr2CuO2Cl21.951.870.1860.1620.3905.806.5 × 10−100.08125151.98618
La2CuO42.162.010.2920.1130.4013.221.5 × 10−100.15133141.90516