"""Motion amplitude and phase detector."""
import logging
import numpy as np
from finesse.detectors.general import Detector
from finesse.detectors.workspace import DetectorWorkspace
LOGGER = logging.getLogger(__name__)
[docs]class MotionDetectorWorkspace(DetectorWorkspace):
def __init__(self, owner, sim):
super().__init__(owner, sim, needs_signal=True)
[docs]class MotionDetector(Detector):
"""Represents a motion detector which calculates the amplitude and phase of surface
motion.
Parameters
----------
name : str
Name of newly created motion detector.
node : :class:`.Node`
Node to read output from.
"""
def __init__(self, name, node):
Detector.__init__(self, name, node, dtype=np.complex128, label="Motion")
def _get_workspace(self, sim):
def output_fn(ws):
if ws.sim.signal:
return (
ws.sim.signal.get_out(self.node, 0, 0)
* ws.sim.model_settings.x_scale
)
ws = MotionDetectorWorkspace(self, sim)
ws.set_output_fn(output_fn)
return ws