Abstract
We report on a noncollinear red–green–blue (RGB) laser light source using a two-dimensional nonlinear photonic quasicrystal. The red and blue lights result from a green light pumped optical parametric generation process cascading two frequency doubling processes in a single-pass setup. Together with the residual green light, two sets of RGB lights were observed in a wide temperature range, which indicates a practical method for constructing a compact multiwavelength laser light source.
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