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Reducing stray light is one of the main challenges in combustion experiments using laser beams (such as Raman spectroscopy) for detection. By using a combination of ultrafast laser pulses and gated ICCD or emICCD cameras, a time filter can be effectively used to remove bright and constant flame backgrounds. When the signal reaches the detector, these cameras can open electronic shutters within the...
The use of photons to directly or indirectly drive chemical reactions has fundamentally changed the field of nanomaterial synthesis, leading to the emergence of new sustainable laser chemistry methods for manufacturing micro - and nanostructures. The incident laser radiation triggers complex interactions between chemical and physical processes at the interface between solid surfaces and liquid or ...
Conservation of energy is a fundamental concept in physics that can be used to explain anything from planetary orbits to the internal workings of individual atoms.Energy can be converted into other forms, but the overall energy level is usually considered to vary over time. Therefore, when attempting to describe a system, physicists usually pay attention to ensuring that it is isolated from the su...
The fully dielectric element surface has the characteristics of low material loss and strong field localization, making it very suitable for manipulating electromagnetic waves at the nanoscale. Especially the surface of all silicon dielectric elements can achieve ideal compatibility with complementary metal oxide semiconductor technology, making it an ideal choice for large-scale monolithic integr...
xLight, a US startup aiming to commercialize particle accelerator driven free electron lasers (FELs) for use in semiconductor production, says it has raised $40 million in a series B round of venture funding.The Palo Alto, California, firm said that the support would enable it to develop a prototype next-generation light source capable of emitting at extreme ultraviolet (EUV) wavelengths that are ...