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|IPG Photonics Q4, 2018 sales slide|
Nine per cent fall to $330m in line with guidance; China sales tank, Europe down, but US demand boosted.
|CEA-Leti lens-free optics set to improve AR|
Combining integrated optics and holography allows AR glasses to be less bulky and offer wider field of view.
|Wavelength control in quantum dot lasers could assist sensing and communication|
University of Utah project couples pairs of microdisk lasers for consistent single-wavelength output.
|Non-invasive prostate cancer treatment wins 2019 SPIE Startup Challenge|
Photonics-based procedure is less invasive than surgery, only requires local anaesthesia, and takes less than one hour.