Optical Absorption Characteristics of Pink Ruby

Absorption cross-section values for polarized light have been measured for pink-ruby specimens by a multiple thickness correlation method. The values (in 10−20 cm2) are: σB‖ = 38.1, σG⊥ = 22.8, σB⊥ = 22.5, σG‖ = 7.23, σR1⊥=1.22, σR2⊥=0.975, σR2‖=0.263, and σR1‖=0.168, where B and G stand for the blue and green broad bands, R1, R2, the R-lines.