C-Band Ultrasonic Delay Line Using Mode Conversion in YAG (Correspondence)

A delay line is described which uses longitudinal-to-shear wave conversion to achieve low acoustic loss in YAG with CdS transducers. This device provides 4 /spl mu/s of delay at 5 GHz with a 6-dB bandwidth of ~1.3 GHz and an insertion loss of ~65 dB.