Optical properties

Infrared refractive index n=2.375.

At 300 K:

	Type IIa diamond refractive index versus wavelength. Experimental points: data from four references (Edwards and Ochoa [1981]).
	Type IIa diamond refractive index versus photon energy at 300 K. (Walker and Osantowski [1964]).
	Reflectance versus photon energy, 300 K. (Walker and Osantowski [1964]).
	Absorption edge spectrum of diamond at various temperatures. (Clark et al. [1964]).
	Visible and ultraviolet absorption spectra of a diamond with different types of impurities. Predominant type of impurity is: 1. boron atoms; 2. N3 centers; 3. single nitrogen atoms; 4. absorption spectra of a brown diamond. (Wilks and Wilks [1991]).
	Infrared absorption spectra of a diamond in which 1. boron atoms are predominant impurities; 2. single nitrogen atoms are predominant impurities (Wilks and Wilks [1991]).

Two-photon absorption coefficient β for IIa diamond (ρ=10¹⁴-10¹⁶ Ω cm))