For decades, laser engineers have wrestled with an embarrassing blind spot: the green-through-yellow slice of the visible ...

(a) Schematic of the operations of wavelength conversion due to the SHG and SFG from the GaSe-integrated microfiber. When pumped by two continuous-wave laser with the wavelengths of λ1 and λ2, there ...

Researchers at the Indian Institute of Science (IISc) have fabricated a device to increase or "up-convert" the frequency of short infrared light to the visible range. Up-conversion of light has ...

Laser frequency combs are valuable analytical tools for observing chemical phenomena or detecting the presence of particular species at low concentrations. The key to these applications is the ...