A new type of semiconductor laser is studied, in which injected carriers in the active region
are quantum mechanically confined in localized finite self-assembled wire-like quantumdash
(Qdash) structures that are varied in sizes and compositions. Effects of such carrier
distribution and quasi three-dimensional density of states contribute to a quasisupercontinuum
interband lasing characteristics, which is a new laser design platform as
compared to continuous broad emission spectrum generated by nonlinear media pumped
with ultrashort laser pulse....
Automation is the use of control systems (such as numerical control, programmable
logic control, and other industrial control systems), in concert with other applications of
information technology (such as computer-aided technologies [CAD, CAM, CAx]), to control
industrial machinery and processes, reducing the need for human intervention. In the scope
of industrialization, automation is a step beyond mechanization.
Excimer lasers are pulsed gas lasers that intrinsically offer efficient and powerful
broadband emission at several spectral regions throughout the ultraviolet.
The spectral widths are typically 2 nm. An exception to this categorization is the
XeF laser urith its broadly tunable C+A transition (approximately 50 nm) in the
visible. The broad tunability results from the steeply repulsive A state.