Generation of monochromatic visible light in microstructured optical fiber by nondegenerate four-wave mixing

We exploit nondegenerate four-wave mixing to generate narrow-bandwidth visible light from blue to orange in microstructured optical fiber. The process is excited by nanosecond dual-wavelength pump pulses (532/1064 nm) produced by a frequency-doubled passively Q-switched Nd:YAG laser. A linearly polarized, fundamental mode signal wave is generated in the visible, accompanied by an idler wave in the near-infrared. The signal and idler wavelengths are adjustable by the design of the microstructure.