Figure 5

each file named AM04*.csv in this folder is a different scan of the etalon. The files are organised as follows:

temperature (C)	photon counts (on)	photon counts (off)	power (mW)

each file is taken at a different laser wavelength. This is saved in the first line of each file.

The laser wavelength was converted to energy using E= 2 h c/ \lambda where E is the excitation energy, h is plancks constant and c is the speed of light and \lambda is the wavelgnth.


Calibration:

The temperature column referes to the temperature of the etalon and is realted to frequency through the calibration:

f = a1 + a2 T + a3 T^2 + a4 T^3

where f is the frequency and T is the temeprature. The coefficeint a1, a2, a3, a4 are found in file "etalon_calibration_parameters.csv" in the figure 4 folder.


Processing:

points where the laser power was greater than 1% of the average laser power are discarded.

the difference between the photon counts on and photon counts off columns are taken. The data is binned into 1 GHz bins

The data is fitted with a sum of three lorentzians, the amplitudes of these lorentizans are the plotted points in figure 5.

The fitted parameters are saved in "side_band_ratio_fitpara.csv"

Model:

The solid lines in figure 5 are constructed from the equations given in the text. The code for these model is given in the mathematica file in the folder for figure 4.


The plotting code is included in the code for the model in the figure 4 folder.
