Optical properties of lead�?�bismuth cuprous glasses

[摘要] The optical transmission and absorption spectra in UVâ€�?�VIS were recorded in the wavelength range 350â€�??800 nm for different glass compositions in the system (CuO)_ð‘�?(PbO)_{50â€�?�ð�?��?}(Bi₂O₃)₅₀ (ð‘�? = 2.5, 5.0, 7.5, 10.0, 12.5, 15.0, 20.0). Absorption coefficient (ð›�?), optical energy gap (𝐸_opt), refractive index (ð‘�??_D), optical dielectric constant ($varepsilon_{infty}^{′}$), measure of extent of band tailing (ð›�? 𝐸), constant (ð›�?) and ratio of carrier concentration to the effective mass (ð‘�?/ð‘�?^*) have been reported. The effects of compositions of glasses on these parameters have been discussed. It has been indicated that a small compositional modification of the glasses lead to an important change in all the optical properties including non-linear behaviour. The optical parameters were found to be almost the same for different glasses in the same family.

[学科分类] 材料工程

[关键词] Optical properties;lead bismuth glasses;non linear behaviour.