Answers are grounded in this paper and cite their sources.
We investigated the frequency-doubling properties of light beams whose transverse profile is given by the zero-order Bessel function J₀(r), Bessel beams. Phase-matched second-harmonic generation in a KDP crystal was observed at angles usually not suited for phase matching. It is thereby demonstrated that under certain circumstances, Bessel beams can be viewed as light beams with tunable wavelength. A variety of applications in the field of nonlinear optics is expected.
No takes yet. Share an insight, caveat, or question.
Wulle et al. (1993) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: