Current consumer hardware has become quite powerful. Off-theshelf computers are today capable of displaying 3D in realtime. With the advent of the Apple iPhone and the Smartphone revolution, mobile devices are becoming ubiquitous, yet they are equipped with graphic hardware that is rivaling dedicated gaming devices like the Nintendo DS in terms of 3D performance.With the release of the version 1.0 of the WebGL specification a mature API for 3D graphics in web browsers has been established by the Kronos Group. WebGL provides native, hardware-accelerated support for 3D graphics in current versions of Google Chrome, Mozilla Firefox, Apple Safari and Opera.Today's products always involve 3D data.Either the raw CAD/CAM data is used to actually manufacture products or 3D models are used to aid the design process. This data is very often involved and utilized in digital content creation (DCC) pipelines, that leverage the data to enable further 3D applications, such as product presentation or visualization.This paper analyzes existing DCC pipelines and proposes a webbased solution to adapt existing 3D applications to native 3D web applications. The web-based DCC pipeline is built upon web standards, such as WebGL and X3D.

For possible applications of colloidal nanocrystals in optoelectronics and nanophotonics, it is of high interest to study their response at low excitation intensity with high repetition rates, as switching energies in the pJ/bit to sub-pJ/bit range are targeted. We develop a sensitive pump-probe method to study the carrier dynamics in colloidal PbS/CdS quantum dots deposited on a silicon nitride waveguide after excitation by laser pulses with an average energy of few pJ/pulse. We combine an amplitude modulation of the pump pulse with phase-sensitive heterodyne detection. This approach permits to use co-linearly propagating co-polarized pulses. The method allows resolving transmission changes of the order of 10−5 and phase changes of arcseconds. We find a modulation on a sub-nanosecond time scale caused by Auger processes and biexciton decay in the quantum dots. With ground state lifetimes exceeding 1 μs, these processes become important for possible realizations of opto-electronic switching and modulation based on colloidal quantum dots emitting in the telecommunication wavelength regime.

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