Synthetic multidimensional plasma electron hole equilibria

Multidimensional electron beam-plasma instabilities in the relativistic regime

Transient strain driven by a dense electron-hole plasma.

We measure transient strain in ultrafast laser-excited Ge by time-resolved x-ray anomalous transmission. The development of the coherent strain pulse is dominated by rapid ambipolar diffusion. This pulse extends considerably longer than the laser penetration depth because the plasma initially propagates faster than the acoustic modes. X-ray diffraction simulations are in agreement with the obse...

Exciton and electron-hole plasma formation dynamics in ZnO

We employ optical pump-THz probe measurements to study the formation of excitons and electron-hole plasmas following photogeneration of a hot electron-hole gas in the direct gap semiconductor zinc oxide. Below the Mott density, we directly observe the evolution of the hot electron-hole plasma into an insulating exciton gas in the 10 to 100 ps following photoexcitation. The temperature dependenc...

Semiconductor microstructure in a squeezed vacuum: Electron-hole plasma luminescence

We consider a semiconductor quantum-well placed in a waveguide microcavity and interacting with the broadband squeezed vacuum radiation, which fills one mode of the waveguide with a large average occupation. The waveguide modifies the optical density of states so that the quantum well interacts mostly with the squeezed vacuum. The vacuum is squeezed around the externally controlled central freq...

The Robustness of Multidimensional Signalling Equilibria *

The question of robustness or structural stability is an important one to ask of any equilibrium concept because of the desirability of continuity (and even differentiability, if possible) in order to do sensitivity analysis (and qualitative if not quantitative comparative statics). Such a question has been resolved affirmatively for Riley’s (1979) one-dimensional concept of informational equil...