Amplitude-modulated continuous-wave laser rangefinder employing Bessel–Gauss beamforming

Abstract

We propose an amplitude-modulated continuous-wave laser rangefinder employing Bessel–Gauss beamforming. Our Bessel–Gauss beam was generated by a newly proposed doublet configuration, which is simple and low cost. Such a beam was propagated &gt; 2 m with a mainlobe having the diameter &lt;<!-- 1 m m . We have conducted proof-of-concept ranging experiments employing the amplitude-modulated continuous-wave scheme with the Bessel–Gauss beam and obtained ranging results of a measurement distance up to 2 m. To the best of our knowledge, this is the first attempt to apply zeroth-order Bessel–Gauss beamforming to laser rangefinders.