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awade/PDH_shotNoise.py

Created September 11, 2019 08:20
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Python function for computing PDH shot noise limit
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PDH_shotNoise.py
def S_f_SN(Pcar, Finesse, Lcav, lambd=1064.0e-9):
'''
Compute PDH shot noise
'''
_h = 6.62607004e-34 # [J.s] Plank's constant
_c = 2.99792458e8 # [m/s] Speed of light
return np.sqrt(_h * _c**3) / 8 / (Finesse * Lcav * np.sqrt(lambd * Pcar))
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