50 lines
1.8 KiB
Python
50 lines
1.8 KiB
Python
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from esbo_etc.classes.optical_component.AOpticalComponent import AOpticalComponent
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from esbo_etc.classes.ITransmissive import ITransmissive
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from esbo_etc.classes.SpectralQty import SpectralQty
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from abc import abstractmethod
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import astropy.units as u
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from astropy.modeling.models import BlackBody
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class AHotOpticalComponent(AOpticalComponent):
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"""
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Abstract super class for an optical component with thermal emission
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"""
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@abstractmethod
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@u.quantity_input(wl_bins='length', temp=[u.Kelvin, u.Celsius])
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def __init__(self, parent: ITransmissive, emissivity: SpectralQty, wl_bins: u.Quantity, temp: u.Quantity):
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"""
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Initialize a new optical component with thermal emission
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Parameters
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----------
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parent : ITransmissive
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The parent element of the optical component from which the electromagnetic radiation is received.
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emissivity : SpectralQty
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The spectral emissivity coefficient for the optical surface.
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wl_bins : Quantity
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Wavelengths used for binning
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temp: Quantity in Kelvin / Celsius
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Temperature of the optical component
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"""
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# Initialize super class
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super().__init__(parent)
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if temp > 0 * u.K:
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# Create noise from black body model
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bb = BlackBody(temperature=temp, scale=1. * u.W / (u.m ** 2 * u.nm * u.sr))
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self._noise = SpectralQty(wl_bins, bb(wl_bins)) * emissivity
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else:
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# Create zero dummy noise
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self._noise = SpectralQty(wl_bins, [0] * len(wl_bins) << u.W / (u.m ** 2 * u.nm * u.sr))
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def ownNoise(self) -> SpectralQty:
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"""
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Calculate the noise created by the optical component
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Returns
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-------
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noise : SpectralQty
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The noise created by the optical component
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"""
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return self._noise
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