Refractive index of Nb (Niobium)

Optical constants of Nb (Niobium)
Golovashkin et al. 1969: n,k 0.40–9.2 µm; 78 K

Wavelength: µm

(0.40–9.20)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Conditions & Spec sheet

temperature: 78 K

Comments

78 K (-195.15 °C)

References

A. I. Golovashkin, I. E. Leksina, G. P. Motulevich and A. A. Shubin. The optical properties of niobium, Sov. Phys. JETP 29, 27-34 (1969)

Data

[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

Niobium, Nb

Niobium (Nb) is a soft, grey, ductile transition metal, often recognized for its high melting point and unique superconducting properties. In the realm of optics, niobium's most noteworthy application lies in its thin film form, which can be utilized as a coating for specialized optical components. These coatings benefit from niobium's ability to provide excellent reflectivity in the infrared spectrum. Furthermore, due to its superconducting capabilities, niobium finds applications in advanced scientific equipment like particle accelerators and quantum computing setups, where it is used to fabricate superconducting radio-frequency (RF) cavities.

RefractiveIndex.INFO

Optical constants of Nb (Niobium)
Golovashkin et al. 1969: n,k 0.40–9.2 µm; 78 K

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 ]

Conditions & Spec sheet

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

Niobium, Nb

External links

Optical constants of Nb (Niobium)Golovashkin et al. 1969: n,k 0.40–9.2 µm; 78 K

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 ]

Conditions & Spec sheet

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

Niobium, Nb

External links

Optical constants of Nb (Niobium)
Golovashkin et al. 1969: n,k 0.40–9.2 µm; 78 K