Natural three-dimensional nonlinear photonic crystal

Nonlinear photonic crystals (NPCs) are transparent materials that have a spatially uniform linear susceptibility, yet a periodically modulated quadratic nonlinear susceptibility. These engineered materials are used extensively ...

Single laser produces high-power dual comb femtosecond pulses

Researchers have developed a new approach that uses a single laser cavity to create two high-power optical frequency combs emitting high-power femtosecond pulses. The new development paves the way for portable dual-comb light ...

Molecular swarm rearranges surface structures atom by atom

The surface of metals plays a key role in many technologically relevant areas, such as catalysis, sensor technology and battery research. For example, the large-scale production of many chemical compounds takes place on metal ...

Iron in the fire: Researchers pinpoint how iron deposits form

University of Alberta scientists have uncovered the formation mechanism behind a class of mineral deposits that have been hotly contested until now. The findings shed new light on how iron deposits, among others, form—and ...

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