SEMICLASSICAL MODEL OF SEMICONDUCTOR-LASER NOISE AND AMPLITUDE NOISE SQUEEZING .2. APPLICATION TO COMPLEX LASER STRUCTURES

We present noise studies of distributed feedback (DFB) laser structure s, where spatial hole burning (SHB) plays a key role performed using t he model described in Part I of this paper with particular emphasis on the influence of SHB, on the coupling coefficient kappa L, and on the laser facet reflectivities. These structures exhibit high amplitude n oise and the possible noise reduction is strongly reduced compared to Fabry-Perot structures. Didstributed Bragg reflector (DBR) lasers are better candidates even if their performances are also strictly determi ned by SHB and the loss in the Bragg reflector. Finally, limitations d ue to gain suppression are demonstrated for such complex lasers struct ures, We conclude on the optimum laser structure for amplitude squeeze d states generation.