Struct OpticalMaterial 

pub struct OpticalMaterial {
    pub n_real: f64,
    pub n_imag: f64,
    pub wavelength_nm: f64,
}

Optical material characterised by its complex refractive index ñ = n + i·k.

• n_real – Real part of refractive index (phase velocity ratio).
• n_imag – Imaginary part k (extinction coefficient, ≥ 0 for absorbing media).
• wavelength_nm – Wavelength of light in vacuum [nm].

Fields

n_real: f64

Real part of the complex refractive index n.

n_imag: f64

Imaginary part (extinction coefficient) k ≥ 0.

wavelength_nm: f64

Vacuum wavelength [nm].

Implementations

impl OpticalMaterial

pub fn new(n: f64, k: f64, wl_nm: f64) -> Self

Create a new OpticalMaterial with complex index n + ik at wavelength λ.

pub fn absorption_coefficient(&self) -> f64

Absorption coefficient α [m⁻¹].

α = 4π·k / λ where λ is in metres.

pub fn reflectance_normal(&self) -> f64

Normal-incidence reflectance R from vacuum into this material.

R = ((n−1)² + k²) / ((n+1)² + k²)

pub fn penetration_depth(&self) -> f64

Optical penetration (skin) depth [m].

δ = λ / (4π·k) (wavelength in vacuum in metres). Returns infinity when k = 0 (non-absorbing material).

pub fn optical_impedance(&self) -> f64

Optical impedance Z [Ω] (magnitude).

Z = Z₀ / n_real where Z₀ ≈ 376.73 Ω is the free-space impedance.

Trait Implementations

impl Clone for OpticalMaterial

fn clone(&self) -> OpticalMaterial

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OpticalMaterial

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for OpticalMaterial