Active Mode Locking: Quantum Oscillator vs. Classical Coupled Oscillators

Mode expansion approach is proposed to simulate the active mode locked laser. In this method, electric fields of optical modes in the laser cavity are treated as free classical oscillators. The optical modulator provides the coupling among the modes or oscillators. It is found that the eigenvalue of this coupled system is corresponding to the threshold optical gain and normal mode or eigenfunction is corresponding to optical field of each mode. …