Title :
Improved time-sidelobe performance in SAW RAC´s using laser aided phase compensation
Author_Institution :
Hughes Aircraft Co., Fullerton, CA, USA
Abstract :
A modified form of laser direct writing has been applied to phase compensate reflecting array correlators (RAC). Accurate spatial correction patterns were written by directed laser light, trimming the phase response characteristics of a 3600 TB (time-bandwidth) RAC delay line fabricated on YZ lithium niobate. The resulting time sidelobes were suppressed to -44 dB
Keywords :
delay lines; laser beam applications; lithium compounds; niobium compounds; surface acoustic wave devices; LiNbO3; SAW devices; YZ lithium niobate; delay line; laser aided phase compensation; laser direct writing; reflecting array correlators; spatial correction patterns; time-sidelobe performance; Delay lines; Dispersion; Etching; Gas lasers; Laser ablation; Laser beams; Laser modes; Laser radar; Power lasers; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1988. Proceedings., IEEE 1988
Conference_Location :
Chicago, IL
DOI :
10.1109/ULTSYM.1988.49365
