Refractive index of CdGeAs2 (Cadmium germanium arsenide)

Optical constants of CdGeAs₂ (Cadmium germanium arsenide)
Boyd et al. 1972: n(o) 2.4–11.5 µm

Wavelength: µm

(2.4–11.5)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=9.1064+\frac{2.2988λ^2}{λ^2-1.0872}+\frac{1.6247λ^2}{λ^2-1370}$$

Comments

Ordinary ray (o)

References

1) G. D. Boyd, E. Buehler, F. G Storz, J. H. Wernick. Linear and nonlinear optical properties of ternary A^IIB^IVC₂^V chalcopyrite semiconductors, IEEE J. Quant. Electron., 8, 419-426 (1972)
2) G. C. Bhar. Refractive index interpolation in phase-matching, Appl. Opt. 15, 305-307 (1976)
*Ref. 2 provides a dispersion formula based on data from Ref. 1

Data

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

Optical transmission calculator

Wavelength: µm
Thickness:
Calculation method:

Transmittance[ i ]

T =

LogX LogY eV

Reflection calculator

Wavelength: µm
Angle of incidence (0~90°):
Direction: in out

Reflectance[ i ]

P-polarized

R_P =

S-polarized

R_S =

Non-polarized (Rp+Rs)/2

R =

R_P R_S R LogY

Reflection phase[ i ]

ɸ_P = °
ɸ_S = °

Brewster's angle[ i ]

θ_B = °

Critical angle[ i ] [ i ]

θ_C = °

INFO

Cadmium germanium arsenide, CdGeAs₂

Cadmium germanium arsenide (CdGeAs₂) is an inorganic compound that crystallizes in a chalcopyrite structure, exhibiting intriguing optical and optoelectronic properties. It is particularly noteworthy for its significant nonlinear optical coefficients and phase-matching capabilities. This makes CdGeAs₂ a valuable material for frequency conversion applications, such as second-harmonic generation and parametric oscillation, especially in the mid-infrared range. Furthermore, the material's large bandgap allows it to operate at elevated temperatures without significant thermal degradation, making it suitable for harsh environmental conditions. However, the presence of toxic elements like cadmium and arsenic requires special handling precautions and may limit its widespread adoption. CdGeAs₂ can be synthesized through various methods, including Bridgman-Stockbarger and Czochralski techniques, which are employed to yield high-quality single crystals. Given its specialized capabilities in nonlinear optics and durability in challenging conditions, CdGeAs₂ remains a material of particular interest in advanced optical applications.

RefractiveIndex.INFO

Optical constants of CdGeAs₂ (Cadmium germanium arsenide)
Boyd et al. 1972: n(o) 2.4–11.5 µm

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula [ i ]

Comments

References

Data

Optical transmission calculator

Transmittance[ i ]

Reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

INFO

Cadmium germanium arsenide, CdGeAs₂

Optical constants of CdGeAs2 (Cadmium germanium arsenide)Boyd et al. 1972: n(o) 2.4–11.5 µm

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula [ i ]

Comments

References

Data

Optical transmission calculator

Transmittance[ i ]

Reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

INFO

Cadmium germanium arsenide, CdGeAs2

Optical constants of CdGeAs₂ (Cadmium germanium arsenide)
Boyd et al. 1972: n(o) 2.4–11.5 µm

Cadmium germanium arsenide, CdGeAs₂