Inspection of cracks with focused angle beam laser ultrasonic wave
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2018.09.012
Abstract: Abstract In this work, in order to improve the detecting ability of laser ultrasonic testing technique for inner cracks in metals, an arc-line-focused laser source is proposed to generate focused angle-beam bulk waves in thermoelastic… read more here.
Keywords: laser ultrasonic; angle beam; focused angle; arc line ... See more keywords
Wide‐angle 2D beam‐steering with Si‐based 16 × (1 × 16) optical phased arrays
Sign Up to like & getrecommendations! Published in 2020 at "Electronics Letters"
DOI: 10.1049/el.2019.3490
Abstract: The authors demonstrate integrated 1D optical phased arrays (OPAs) for wide-angle 2D beam-steering. The 2D OPA consists of 16 1D transversal steering OPAs whose radiators have different grating periods, to assign different longitudinal angles. The… read more here.
Keywords: beam steering; angle beam; wide angle; phased arrays ... See more keywords