2009/02/12 by S., Arismar Cerqueira, Marconi, Jorge D., Fragnito, Hugo L. +1
#FOS: Physical sciences #Optics (physics.optics)
paper · doi:10.48550/arxiv.0902.2701
We generate a 200-nm optical frequency comb at 1.5 microns by injecting two single-frequency lasers into a highly nonlinear fiber, and explore its spectral phase properties and high power to demonstrate full nonlinear conversion into its second harmonic. Combs of optical frequencies with 100-nm (~ 48 THz) bandwidths, centered at 790-800 nm and spaced by 0.8-1 nm (380-470 GHz) were produced by second harmonic and multiple sum frequency generation simply by focusing into a 2-mm long nonlinear crystal. Conventional birefringence phase matching was used in normal incidence configuration without tilting the crystal.