"""Material objects are a simple structure that contain commonly used
properties for calculations. By default this includes Fused Silica and
Silicon at 123K.
.. todo::
At some point add in wavelenth and temperature dependence to these
Material objects.
"""
cimport cython
@cython.auto_pickle(True)
cdef class Material(object):
""""""
def __init__(self, alpha, nr, dndT, kappa, emiss, poisson, E, rho, C, T):
self.values.alpha = alpha
self.values.nr = nr
self.values.dndT = dndT
self.values.kappa = kappa
self.values.emiss = emiss
self.values.poisson = poisson
self.values.E = E
self.values.T = T
self.values.C = C
self.values.rho = rho
@property
def alpha(self):
r"""Thermal expansion coefficient :math:`\alpha`"""
return self.values.alpha
@property
def nr(self):
r"""Refractive index :math:`n`"""
return self.values.nr
@property
def dndT(self):
r"""Thermo refractive coefficient :math:`\frac{dn}{dT} \: [K^{-1}]`"""
return self.values.dndT
@property
def kappa(self):
r"""Thermal conductivity :math:`\kappa \: [W m^{-1}]`"""
return self.values.kappa
@property
def emiss(self):
r"""Emissivity"""
return self.values.emiss
@property
def poisson(self):
r"""Poisson's ratio"""
return self.values.poisson
@property
def E(self):
r"""Young's modulus :math:`[\mathrm{kg} \, m^{-3}]`"""
return self.values.E
@property
def rho(self):
r"""Density :math:`[\mathrm{kg} \, m^{-3}]`"""
return self.values.rho
@property
def C(self):
r"""specific heat :math:`[J \, \mathrm{kg}^{-1}]`"""
return self.values.C
@property
def T(self):
r"""The temperature material's properties are defined at :math:`[K]`"""
return self.values.T
Vacuum = Material(
0, # thermal expansion coefficient
1, # refractive index
0, # dn/dt
0, # thermal conductivity
0, # emissivity
0, # Poisson's ration
0, # Young's modulus
0, # density
0, # specific heat
0, # reference temperature
)
FusedSilica = Material(
5.5e-7, # thermal expansion coefficient
1.45, # refractive index
8.6e-6, # dn/dt
1.38, # thermal conductivity
0.91, # emissivity
0.17, # Poisson's ration
7.2e10, # Young's modulus
2202, # density
772, # specific heat
297, # reference temperature
)
Gold = Material(
14.13e-6, # thermal expansion coefficient
0.258, # refractive index
0, # dn/dt
315, # thermal conductivity
0.05, # emissivity
0.42, # Poisson's ration
7.9e10, # Young's modulus
1930, # density
129, # specific heat
297, # reference temperature
)
# Taken from Voyager GWINC
Silicon123K_sum = Material(
1e-10, # thermal expansion coefficient
3.4, # refractive index @ 2um
1e-4, # dn/dt
700, # thermal conductivity
0.7, # emissivity, https://www.sciencedirect.com/science/article/pii/S0017931019361289
0.27, # Poisson's ration
155.8e9, # Young's modulus
2329, # density
300, # specific heat
123, # reference temperature
)
CaF2_300K_2um = Material(
18.5e-6, # thermal expansion coefficient
1.4239, # refractive index @ 2um
-10e-6, # dn/dt
9.71, # thermal conductivity
0.88, # emissivity
0.26, # Poisson's ration
75.8e9, # Young's modulus
3180, # density
854, # specific heat
300, # reference temperature
)
# Fused silica used for iLIGO
# reference CTE (NIST SRM 739)
Corning7940 = Material(
4.869e-07, # thermal expansion coefficient
1.45, # refractive index
9.6e-6, # dn/dt
1.367, # thermal conductivity
0.9, # emissivity
0.167, # Poisson's ration
72.93E9, # Young's modulus
2220.00, # density
704.21, # specific heat
293.15, # reference temperature
)
# Suprasil ref
# n, Thermal expansion coefficient from data sheet
# https://www.heraeus.com/media/media/hca/doc_hca/products_and_solutions_8/optics/Data_and_Properties_Optics_fused_silica_EN.pdf
suprasil3002_2um = Material(
5.9e-7, # thermal expansion coefficient
1.499, # refractive index
8.89e-6, # dn/dt
1.38, # thermal conductivity
0.9, # emissivity
0.17, # Poisson's ration
73.1E9, # Young's modulus
2203, # density
964, # specific heat
293.15, # reference temperature
)
BK7_2um = Material(
7.1e-6, # thermal expansion coefficient
1.4946, # refractive index
8.94E-7, # dn/dt
1.114, # thermal conductivity
0.9, # emissivity
0.206, # Poisson's ration
82e9, # Young's modulus
2510, # density
858, # specific heat
293.15, # reference temperature
)
# zblan reference Zhu X., Peyghambarian N., High-Power ZBLAN Glass Fiber Lasers: Review and Prospect, 2010
ZBLAN_2um = Material(
17.2e-6, # thermal expansion coefficient
1.4956, # refractive index
-14.75e-6, # dn/dt
0.628, # thermal conductivity
0.9, # emissivity
0.206, # Poisson's ration
58.5e9, # Young's modulus
4330, # density
151, # specific heat
293.15, # reference temperature
)