Title :
Optoelectronic transmitters for medical ultrasound transducers
Author :
Emery, Charles D. ; Swartz, John C. ; Casey, H.C., Jr. ; Smith, Stephen W.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
Optoelectronics and fiber optics can be used to miniaturize and improve the flexibility of the transducer cable and handle of medical diagnostic ultrasound scanners. The reduction in size gains importance as 2-D array transducers with up to 1000 independent channels are incorporated in diagnostic ultrasound systems. The design, fabrication, and analysis of a photoconductive semiconductor switch (PCSS) is described. The monolithic silicon PCSS was used in combination with a pulsed infrared semiconductor diode laser with a fiber optic `pigtail´ to shock excite and burst excite a 2-D array transducer element resonant at 3.5 MHz. Optically controlled transducer voltage and ultrasound pulses are displayed for single shock excitation and burst excitation
Keywords :
acoustic pulses; biomedical ultrasonics; integrated optoelectronics; optical fibres; optical transmitters; photoconducting switches; ultrasonic transducer arrays; 2.5 MHz; 2D array transducers; burst excitation; diagnostic ultrasound systems; fiber optic pigtail; fiber optics; medical ultrasound transducers; microelectronic fabrication; optically controlled transducer ultrasound pulses; optically controlled transducer voltage pulses; optoelectronic transmitters; photoconductive semiconductor switch; pulsed infrared semiconductor diode laser; single shock excitation; transducer cable flexibility; Acoustic arrays; Acoustic pulses; Biomedical acoustic imaging; Integrated optoelectronics; Light triggered switches; Optical fiber applications; Optical transmitters;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401879
