Analyses of Valid Range for the Linear Approximation in a Single-Mode Laser

Autor: Cao Li, WU Da-Jin, Cheng Qing-Hua, Wang Jun
Rok vydání: 2004
Předmět:
Zdroj: Communications in Theoretical Physics. 42:365-368
ISSN: 0253-6102
DOI: 10.1088/0253-6102/42/3/365
Popis: Using the linear approximation method, we calculated the steady-state mean normalized intensity fluctuation for a loss-noise model of a single-mode laser driven by a pump noise and a quantum noise, whose real part and imaginary part are cross-correlated. We analyzed the valid range for the linear approximation method by studying the influences on the steady-state mean normalized intensity fluctuation by the cross-correlation coefficient, the intensities of the quantum and pump noise, the net gain, and the amplitude and frequency of the input signal, and we found that the valid range becomes wider when the cross-correlation between the real and imaginary part of quantum noise is weaker, the noise intensities of quantum and pump are weaker, the laser system is far from the threshold and the signal has smaller amplitude and higher frequency.
Databáze: OpenAIRE