Handheld Probe (IMAGE) Optica Caption This is a photograph of the handheld probe. The motor, translation stage, ultrasonic transducer, and optical fibers are all incorporated in this handheld probe for easy operation. Credit Yong Zhou Usage Restrictions Include caption and credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.