Anti-colliding design for passively mode-locked lasers

Summary form only given. The performance of two-section, passively mode-locked (PML) semiconductor lasers is theoretically analyzed for different cavity mirror configurations: the so called self-colliding pulse mode-locking (SCPML), the symmetrical configuration (SML) and the anti-colliding pulse mode-locking (ACPML). Our analysis shows that contrary to the intuition, placing the saturable absorber section close to an antireflection coated facet leads to a substantial increase in output power and to a reduction in amplitude and timing jitter. Moreover, it also broadens the bias current region of stable passive mode-locking operation. As the low reflectivity of the facet reduces the interaction between the forward and backward propagating waves, we termed this design as anti-colliding pulse mode locking.