abstract.dm_laser

dm_laser(
    *,
    quantum_efficiency: Annotated[float, minimum=0] = 0.4,
    spontaneous_emission_factor: Annotated[float, minimum=0] = 3e-05,
    carrier_lifetime: Annotated[
        float, exclusiveMinimum=0, units='s'
    ] = 1e-09,
    gain_compression_factor: Annotated[
        float, minimum=0, units='μm³'
    ] = 1e-05,
    transparency_carrier_density: Annotated[
        float, minimum=0, units='μm⁻³'
    ] = 1100000.0,
    differential_gain: Annotated[float, minimum=0, units='nm²'] = 0.025,
    n_group: Annotated[float, minimum=0] = 3.53,
    linewidth_enhancement_factor: Annotated[float, minimum=0] = 5.0,
    confinement_factor: Annotated[float, exclusiveMinimum=0] = 0.4,
    photon_lifetime: Annotated[
        float, exclusiveMinimum=0, units='s'
    ] = 3e-12,
    active_region_volume: Annotated[
        float, exclusiveMinimum=0, units='μm³'
    ] = 150.0,
    rel_intensity_noise: Annotated[float, minimum=0, units='1/Hz'] = 0,
    linewidth: Annotated[float, minimum=0, units='Hz'] = 0,
    reflection: complex = 0,
    z0: Annotated[complex, units='Ω'] = 50.0,
    seed: Annotated[int, minimum=0] | None = None,
) -> photonforge.Component

Abstract directly modulated laser source.

Based on DMLaserTimeStepper.

Args

• quantum_efficiency: Total quantum efficiency ($\eta_0$) for power calibration.
• spontaneous_emission_factor: Fraction of spontaneous emission coupled into the lasing mode ($\beta$).
• carrier_lifetime: Effective carrier recombination lifetime ($\tau_n$).
• gain_compression_factor: Gain compression coefficient ($\epsilon$).
• transparency_carrier_density: Transparency carrier density ($n_0$).
• differential_gain: Differential gain cross-section ($a_0$).
• n_group: Optical group index in the gain medium ($n_g$).
• linewidth_enhancement_factor: Henry’s α factor ($\alpha$) for AM-FM coupling.
• confinement_factor: Modal confinement in the active region ($\Gamma$).
• photon_lifetime: Photon lifetime in the optical cavity ($\tau_p$).
• active_region_volume: Volume of the active gain region ($V_a$).
• rel_intensity_noise: One-sided relative intensity noise (RIN) power spectral density.
• linewidth: Full-width at half-maximum (FWHM) of the laser’s Lorentzian shape.
• reflection: Reflection coefficient for incident fields.
• z0: Characteristic impedance of the electrical port used to convert the input field amplitude to voltage. If None, derived from port impedance, calculated by mode-solving, or set to 50 Ω.
• seed: Random number generator seed to ensure reproducibility.