16 W CW output power from 100-/spl mu/m aperture laser based on quantum well asymmetric heterostructure with lowest internal loss
16 W CW room temperature front facet output optical power and 72% wall plug efficiency were attained in 100-/spl mu/m-aperture laser diodes based on quantum well heterostructure with ultra wide asymmetric waveguide.
Improved catastrophic optical mirror damage level in InGaAs/AlGaAs laser diodes
9.2 W continuous wave (CW) optical power at a heatsink temperature 10/spl deg/C and 12.2 W in a regime with stabilised temperature of the laser chip is demonstrated from a 100 /spl mu/m aperture InGaAs/AlGaAs (/spl lambda/=1.03 /spl mu/m) laser diode with 0.4 /spl mu/m wide GaAs waveguide. Thus, record-high optical power densities of 30 MW/cm/sup 2/ and 40 MW/cm/sup 2/ correspondingly are achieved at the front facet without catastrophic optical mirror damage (COMD).
Mean field model of a game for power
Abstract Our aim is to model a game for power (equivalent to total energy) as a dynamical process, where an excess of power possessed by a player allows him to gain even more power. Such a positive feedback is often termed as the Matthew effect. Analytical and numerical methods allow to identify a set of stationary states, i.e. fixed points of the model dynamics. The positions of the unstable fixed points give an insight on the basins of attraction of the stable fixed points. The results are interpreted in terms of modeling of coercive power.