Refractive index of LiGaS2 (Lithium gallium sulfide, LGS)

Optical constants of LiGaS₂ (Lithium gallium sulfide, LGS)
Kato et al. 2017: n(γ) 1.025–10.591 µm

Wavelength: µm

(1.025–10.591)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Dispersion formula [ i ]

$$n^2=5.77851+\frac{0.12325}{λ^2-0.03465}+\frac{580.13}{λ^2-451.62}$$

Comments

n_γ; room temperature.

References

K. Kato, K. Miyata, L. Isaenko, S. Lobanov, V. Vedenyapin, V. Petrov. Phase-matching properties of LiGaS₂ in the 1.025–10.5910 μm spectral range, Opt. Lett., 42, 4363–4366 (2017)

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

Lithium gallium sulfide, LiGaS₂ (LGS)

Lithium gallium sulfide (LiGaS₂, abbreviated as LGS) is a nonlinear optical crystal material often employed in frequency conversion applications, including second harmonic generation and optical parametric oscillation. Its broad transparency range in the infrared spectrum and high nonlinearity make it suitable for laser systems and other photonics applications. Like other nonlinear optical materials, LGS needs to be phase-matched for effective frequency conversion, and its optical properties can vary with temperature and orientation. Special care must be taken in handling and storing the crystal to prevent degradation of its optical qualities.

RefractiveIndex.INFO

Optical constants of LiGaS₂ (Lithium gallium sulfide, LGS)
Kato et al. 2017: n(γ) 1.025–10.591 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

Lithium gallium sulfide, LiGaS₂ (LGS)

Optical constants of LiGaS2 (Lithium gallium sulfide, LGS)Kato et al. 2017: n(γ) 1.025–10.591 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

Lithium gallium sulfide, LiGaS2 (LGS)

Optical constants of LiGaS₂ (Lithium gallium sulfide, LGS)
Kato et al. 2017: n(γ) 1.025–10.591 µm

Lithium gallium sulfide, LiGaS₂ (LGS)