13.2. Hello wavefront shaping

This script demonstrates how to use OpenWFS to perform a simple wavefront shaping experiment. To run this script, you need to have a GenICam-compatible camera connected to your computer, and a spatial light modulator (SLM) connected to the secondary video output.

import numpy as np

from openwfs.algorithms import StepwiseSequential
from openwfs.devices import SLM, Camera
from openwfs.processors import SingleRoi

# Display the SLM patterns on the secondary monitor
slm = SLM(monitor_id=2)

# Connect to a GenICam camera, average pixels to get feedback signal
camera = Camera(R"C:\Program Files\Basler\pylon 7\Runtime\x64\ProducerU3V.cti")
feedback = SingleRoi(camera, pos=(320, 320), mask_type="disk", radius=2.5)

# Run the algorithm
alg = StepwiseSequential(feedback=feedback, slm=slm, n_x=10, n_y=10, phase_steps=4)
result = alg.execute()

# Measure intensity with flat and shaped wavefronts
slm.set_phases(0)
before = feedback.read()
slm.set_phases(-np.angle(result.t))
after = feedback.read()
print(f"Intensity in the target increased from  {before} to {after}")