Effect on Intensity Correlation Time by Input Signal in a Single-Mode Laser with Bias Signal Modulation

The effect on intensity correlation time T by input signal is studied forgain-noise model of a single-mode laser driven by colored pump noise andcolored quantum noise with colored cross-correlation with a bias signalmodulation in this paper. By using the linear approximation method, wedetect that there exists maximum (i.e., resonance) in the curve of theintensity correlation time T upon bias current i₀ when the noisecorrelation coefficient λ is positive; and there exists minimum (i.e., suppression) in the T-i₀ curve when λ is negative. Andwhen λ is zero, T increases monotonously with increasing i₀. Furthermore, the curve of T upon the signal frequency Ω is also studied. Our study shows that no matter what the value of λ is,there exists minimum (i.e., suppression) in the T-Ω curve.