Optoelectronic transmitters for medical ultrasound transducers

Author

Emery, Charles D. ; Swartz, John C. ; Casey, H.C., Jr. ; Smith, Stephen W.

Volume

3

fYear

1994

fDate

Oct. 31 1994-Nov. 3 1994

Firstpage

1519

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE

Conference_Location

Cannes, France

Print_ISBN

0-7803-2012-3

Type

conf

DOI

10.1109/ULTSYM.1994.401879

Filename

401879