Abstract:The modulation response of a double tunnelling-injection (DTI) quantum dot (QD) laser is studied. Closed-form expressions are obtained for the dynamic characteristics of the laser and the upper limit for the modulation bandwidth is estimated. The optimum cavity length, surface density of QDs, and dc injection current density, maximizing the modulation bandwidth, are shown to exist. The higher the dc injection current density, the smaller should be the optimum values of the cavity length and the surface density… Show more
“…The dynamic characteristics are also improved in DTI and ABL lasers as compared to conventional lasers [18][19][20][21]. Modulation bandwidth is an important parameter describing the speed with which the optical output of diode lasers is varied with altering the input injection current [18].…”
Direct modulation bandwidth and optimum dc current maximizing it are discussed for double tunneling-injection quantum dot (QD) lasers and QD lasers with asymmetric barrier layers and compared to those for conventional QD lasers.
“…The dynamic characteristics are also improved in DTI and ABL lasers as compared to conventional lasers [18][19][20][21]. Modulation bandwidth is an important parameter describing the speed with which the optical output of diode lasers is varied with altering the input injection current [18].…”
Direct modulation bandwidth and optimum dc current maximizing it are discussed for double tunneling-injection quantum dot (QD) lasers and QD lasers with asymmetric barrier layers and compared to those for conventional QD lasers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.