finesse.detectors.powerdetector module

Computes the laser power in an interferometer output or the power from an electrical signal.

class finesse.detectors.powerdetector.PowerDetector(*args, **kwargs)

Bases: MaskedDetector

Represents a power detector with no RF demodulations. It calculates the DC laser power at a node in Watts of optical power.

Parameters

namestr

Name of newly created power detector.

nodeNode

Node to read output from.

class finesse.detectors.powerdetector.PowerDetectorDemod1(*args, **kwargs)

Bases: MaskedDetector

Represents a power detector with one RF demodulation. It calculates the RF beat power at a node in Watts of optical power.

If no demodulation phase is specified then this detector outputs a complex value I+1j*Q.

Parameters

namestr

Name of newly created power detector.

nodeNode

Node to read output from.

ffloat

Demodulation frequency in Hz

phasefloat, optional

Demodulation phase in degrees

property f

f : float Demodulation frequency in Hz

property phase

phase : float, optional Demodulation phase in degrees

class finesse.detectors.powerdetector.PowerDetectorDemod2(*args, **kwargs)

Bases: MaskedDetector

Represents a power detector with two RF demodulation. It calculates the RF beat power at a node in Watts of optical power.

If no demodulation phase is specified for the final demodulation this detector outputs a complex value I+1j*Q where I and Q are the in-phase and quadrature parts of the signal.

Parameters

namestr

Name of newly created power detector.

nodeNode

Node to read output from.

f1float

First demodulation frequency in Hz

phase1float

First demodulation phase in degrees

f2float

Second demodulation frequency in Hz

phase2float, optional

Second demodulation phase in degrees

property f1

f1 : float First demodulation frequency in Hz

property f2

f2 : float Second demodulation frequency in Hz

property phase1

phase1 : float First demodulation phase in degrees

property phase2

phase2 : float, optional Second demodulation phase in degrees