Coupling Frequency Band of the In-Phase Locked Gain Waveguide Array Lasers

A coupling frequency band of an in-phase locked sliced gain waveguide array laser is experimentally investigated. The experimental data show that for an in-phase locked single peak intensity distribution output without side lobes of the sliced gain waveguide array laser, there exists a coupling frequency band and the coupling frequency band increases as the transmissivity of the laser output coupler decreases.