Latin
A	proportional factor on light intensity in Equation (2)	[V]
a	extinction coefficient	[m−1]
B	proportional factor on light intensity in Equation (5)	[V]
b	nonlinear least square regression coefficient
c	constant in Equation (7)	[V]
c p	specific heat capacity	[J·kg−1·K−1]
d	constant in Equation (7)	[V·°C−1]
I	light intensity	[W·m−2]
k	thermal conductivity	[W·m−1·K−1]
L	sample thickness	[m]
m	mass	[kg]
Q	thermal energy	[J]
$\dot{q}$	specific thermal flux	[W·m−1]
R	inverse of the time constant	[s−1]
S	signal	[V]
s	standard uncertainty (estimated)
T	temperature	[°C or K]
t	temperature	[°C]
x	abscissa along the sample thickness	[m]
Greek and composite symbols
α	thermal diffusivity	[m2·s−1]
β	reflectance
δ	Dirac delta function
ρ	density	[kg·m−3]
τ	time	[s]
$\chi$	constant function of Equation (11)	[s−1]
Subscript
0	start, initial value
∞	infinity, asymptotic value
coat	coated
unc	uncoated
Acronyms
D	Dewar
F	Flash
GNP	Graphene Nano-Plates
MCT	Mercury Cadmium Telluride detector
NL-LSF	Nonlinear least square fitting
PTFE	Polytetrafluoroethylene
SA	Sensor Amplifier
SH	Sample holder
SPS	Sensor Power Supply
ZSL	Zinc Selenide Lenses