

In [ ]:

    
import numpy as np 
import matplotlib.pyplot as plt
import glob
# Loads nicard and scope
manager.startModule('logic','cavitylogic')









    Out[ ]:





0

Initialize set up

Amplifyer is fet -15V and = +85V
Calibrate strain gauge to zero with the kinesis software
Pull fiber back
Set nicard to -3.75



In [2]:

    
cavitylogic._ni.cavity_set_voltage(0.0)









    Out[2]:





0



In [3]:

    
cavitylogic._current_filepath = r'C:\BittorrentSyncDrive\Personal - Rasmus\Rasmus notes\Measurements\171001_position15_2'



In [5]:

    
cavitylogic.last_sweep = None
cavitylogic.get_nth_full_sweep(sweep_number=1, save=True)









    Out[5]:





0

Move close with fiber



In [6]:

    
cavitylogic.ramp_popt = cavitylogic._fit_ramp(xdata=cavitylogic.time_trim[::9], ydata=cavitylogic.volts_trim[cavitylogic.ramp_channel,::9])
Modes = cavitylogic._ni.sweep_function(cavitylogic.RampUp_time[cavitylogic.first_corrected_resonances],*cavitylogic.ramp_popt)



In [7]:

    
cavitylogic.current_mode_number= len(cavitylogic.first_corrected_resonances)-2



In [8]:

    
len(cavitylogic.first_corrected_resonances)









    Out[8]:





57



In [9]:

    
cavitylogic.linewidth_measurement(Modes,target_mode = cavitylogic.current_mode_number, repeat=10, freq=40)









    Out[9]:





0



In [11]:

    
high_mode=len(cavitylogic.first_corrected_resonances)-2
low_mode=0

for i in range(15):
    cavitylogic.current_mode_number -=1
    ret_val = cavitylogic.get_nth_full_sweep(sweep_number=2+i)
    target_mode = cavitylogic.get_target_mode(cavitylogic.current_resonances, low_mode=low_mode, high_mode=high_mode, plot=True)
    if target_mode == None:
        print('Moved more that 5 modes')
    cavitylogic.ramp_popt = cavitylogic._fit_ramp(xdata=cavitylogic.time_trim[::9], ydata=cavitylogic.volts_trim[cavitylogic.ramp_channel,::9])
    Modes = cavitylogic._ni.sweep_function(cavitylogic.RampUp_time[cavitylogic.current_resonances],*cavitylogic.ramp_popt)
    cavitylogic.linewidth_measurement(Modes,target_mode = target_mode, repeat=10, freq=40)



In [ ]:

    
cavitylogic.current_mode_number



In [ ]:

    
target_mode



In [ ]:

    
cavitylogic.mode_shift_list



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