cw_laser¶
- photonforge.abstract.cw_laser(*, power=1, rel_intensity_noise=0, linewidth=0, frequency=None, chirp_bandwidth=0, chirp_period=0, chirp_waveform='sawtooth', phase=0, reflection=0, seed=None)[source]¶
Abstract CW Laser source.
Based on
photonforge.CWLaserTimeStepper.- Parameters:
power (Annotated[float, minimum=0, units='W']) – Mean optical output power.
rel_intensity_noise (Annotated[float, minimum=0, units='1/Hz']) – One-sided relative intensity noise (RIN) power spectral density.
linewidth (Annotated[float, minimum=0, units='Hz']) – Full-width at half-maximum (FWHM) of the laser’s Lorentzian shape.
frequency (Annotated[float, minimum=0, units='Hz'] | None) – Absolute laser frequency. If
None, equals the carrier frequency. If detuned from the carrier by Δf, the output envelope rotates at 2πΔf.chirp_bandwidth (Annotated[float, minimum=0, units='Hz']) – Total frequency excursion of a linear sweep, centered on
frequency. Zero disables the chirp.chirp_period (Annotated[float, minimum=0, units='s']) – Duration of one complete sweep.
chirp_waveform (Literal['sawtooth', 'triangle']) – Sweep shape. A sawtooth ramps up over the period and resets; a triangle ramps up over the first half of the period and back down over the second.
phase (Annotated[float, units='°']) – Starting phase of the output envelope.
reflection (complex) – Reflection coefficient for incident fields.
seed (Annotated[int, minimum=0] | None) – Random number generator seed to ensure reproducibility.
- Return type: