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Optical constants of CuGaS2 (Copper gallium sulfide)
Boyd et al. 1971: n(o) 0.55-11.5 µm; 120 °C

Wavelength: µm
 (0.55 – 11.5)  
 

Derived optical constants

logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=3.0984+\frac{2.1419λ^2}{λ^2-0.1225}+\frac{1.5755λ^2}{λ^2-738.43}$$

Comments

Ordinary ray (o); 120 °C

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

References

1) G. D. Boyd, H. Kasper, J. H McFee. Linear and nonlinear optical properties of AgGaS2, CuGaS2, and CuInS2, and theory of the wedge technique for the measurement of nonlinear coefficients, IEEE J. Quant. Electron., 7, 563-573 (1971)
2) G. C. Bhar and G. Ghosh. Temperature-dependent Sellmeier coefficients and coherence lengths for some chalcopyrite crystals, J. Opt. Soc. Am. 69, 730-733 (1979)
*Ref. 2 provides Sellmeier equation based on the data from Ref. 1

More info - wiki

Copper gallium sulfide, CuGaS2