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

<正> The effect on intensity correlation time T by input signal is studied for gain-noise model of a single-modelaser driven by colored pump noise and colored quantum noise with colored cross-correlation with a bias signal modulationin this paper. By using the linear approximation method, we detect that there exists maximum （i.c., resonance） in thecurve of the intensity correlation time T upon bias current i0 when the noise correlation coefficient λ is positive; and thereexists minimum （i.e., suppression） in the T-i0 curve when λ is negative. And when λ is zero, T increases monotonouslywith increasing i0. Furthermore, the curve of T upon the signal frequency Ω is also studied. Our study shows that nomatter what the value of λ is, there exists minimum （i.e., suppression） in the T-Ω curve.