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Laser is considered a sharp sword that cuts iron like mud, but even sharper swords can have tricky moments. For example, in certain scenarios, there are materials with higher reflectivity, such as silver, copper, etc., known as "high reflection materials". High reflective materials have a low absorption rate for lasers, making them difficult to process and potentially causing equipment failure or ...
Nowadays, lasers that emit extremely short flashes can be found in many research laboratories, but they usually fill the entire room. Physicists have now successfully reduced this laser to the size of a computer chip. As they reported in the journal Science, their research can lay the foundation for extremely compact detectors.A team led by Qiushi Guo from the California Institute of Technology in...
When electrons move in molecules or semiconductors, their time scale is unimaginably short. The Swedish German team, including Dr. Jan Vogelsang from the University of Oldenburg, has made significant progress in these ultrafast processes: researchers are able to track the dynamics of electrons released on the surface of zinc oxide crystals using laser pulses with nanoscale spatial resolution and p...
AbstractDue to the width of the laser melt pool and the sintering effect on the surrounding powder, the experimental size of the selective laser melting (SLM) sample will be larger than the design size, which will greatly affect the dimensional accuracy and surface quality of the thin-walled sample. In order to obtain SLM thin-walled TC11 specimens with precise dimensions, an orthogonal experiment...
Laser technology startup Enlightra collaborates with DESY Hamburg to develop and design more stable and efficient comb lasers. This work demonstrates a microresonator with programmable synthetic reflection, providing tailored injection feedback for driving lasers. This technology has significantly improved compared to traditional self injection locking technology and can be produced using standard...