Opto-acoustic transducers for potentially sensitive ultrasonic imaging
Abstract
The paper describes a system for operation at MHz frequencies in which the key element is an opto-acoustic transducer (OAT) whose function is to convert an impinging optical intensity pattern into a corresponding spatial pattern of generated acoustic amplitude. An incident optical pattern can be formed and scanned by optical equipment, which will generate, scan and focus a corresponding acoustic beam. Two basic types of OAT structures have been investigated by means of equivalent circuit models and computer simulation. The construction of several scaled-down OATs has been completed and preliminary testing has begun.
- Publication:
-
Optical Engineering
- Pub Date:
- October 1977
- DOI:
- 10.1117/12.7972112
- Bibcode:
- 1977OptEn..16..432W
- Keywords:
-
- Acoustical Holography;
- Computerized Simulation;
- Equivalent Circuits;
- Imaging Techniques;
- Optical Scanners;
- Ultrasonic Wave Transducers;
- Focusing;
- Fourier Transformation;
- Performance Prediction;
- Photoconductivity;
- Piezoelectricity;
- Wave Front Reconstruction;
- Instrumentation and Photography