SOCk Community Speakers: Sam McLaren

    Date: 
    Friday, January 18, 2019 - 12:00pm
    Location: 
    Meinel 408/410
    Description: 

    Microscopic Modeling of Vertical External Cavity Surface Emitting Lasers (VECSELs).

    Abstract(s): 

    VECSELs, sometimes referred to as semiconductor disk lasers (SDLs), have shown to be modern powerhouses in terms of versatility, power output, beam quality, and ultrafast power generation. In the past, numerical models of these lasers were restricted to macroscopic approaches based on the predetermined gain profiles and assumed a state of equilibrium for the carriers.  However, these macroscopic approaches cannot capture the complex carrier dynamics of the physical system including the coupling of the carriers to the physical gain.  We will present the current microscopic model which couples the one-dimensional Maxwell's Wave Equation to the Semiconductor Bloch Equations and explore the difficulties and the successes of the model informing chip designs and experiments as well as current progress in implementing a transverse dimension to the model.