Refractive index of Tl3AsSe3 (Thallium arsenic selenide, TAS)

Optical constants of Tl₃AsSe₃ (Thallium arsenic selenide, TAS)
Ewbank et al. 1980: n(e) 2–12 µm

Wavelength: µm

(2–12)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{8.993λ^2}{λ^2-0.444^2}+\frac{0.308λ^2}{λ^2-25.0^2}$$

Comments

Extraordinary ray (e)

References

M.D. Ewbank et al.. The temperature dependence of optical and mechanical properties of Tl₃AsSe₃, J. Appl. Phys. 51, 3848-3852 (1980)

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

Thallium arsenic selenide, Tl₃AsSe₃ (TAS)

Thallium arsenic selenide (Tl₃AsSe₃, often referred to as TAS) is a mixed crystal compound known for its nonlinear optical properties and high electro-optic coefficients. Its large transparency range, spanning the mid-infrared spectrum, makes it a valuable material for infrared detectors, parametric oscillators, and other optoelectronic devices. TAS is especially useful in applications that require fast response times due to its high-speed electro-optic effect. However, handling and processing TAS should be approached with caution, as both thallium and arsenic are highly toxic.

RefractiveIndex.INFO

Optical constants of Tl₃AsSe₃ (Thallium arsenic selenide, TAS)
Ewbank et al. 1980: n(e) 2–12 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

Thallium arsenic selenide, Tl₃AsSe₃ (TAS)

Optical constants of Tl3AsSe3 (Thallium arsenic selenide, TAS)Ewbank et al. 1980: n(e) 2–12 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

Thallium arsenic selenide, Tl3AsSe3 (TAS)

Optical constants of Tl₃AsSe₃ (Thallium arsenic selenide, TAS)
Ewbank et al. 1980: n(e) 2–12 µm

Thallium arsenic selenide, Tl₃AsSe₃ (TAS)