The present invention provides an ultrasonic transducer using light, capable of generating ultrasonic waves in an existing MRI in which electrical connection is difficult or an end tip of a subminiature medical device such as an endoscope or a catheter, and a control method thereof. According to an embodiment of the present invention, the ultrasonic transducer includes: an ultrasonic wave transmitting unit generating a resonant frequency by receiving an optical pulse including a laser pulse and transmitting the ultrasonic waves by vibrating by generating the resonant frequency and a support attached to an end part on both sides of the ultrasonic wave transmitting unit and supporting the ultrasonic wave generating unit.COPYRIGHT KIPO 2016본 발명의 일 실시예에 따른 빛을 이용한 초음파 트렌스듀서는 레이저 펄스를 포함하는 광 펄스를 조사받아 자체의 공진주파수를 발생하고, 상기 공진주파수의 발생에 따라 진동하여 초음파를 발신하는 초음파 발신부 및 상기 초음파 발신부의 양측 끝부분에 부착되어 상기 초음파 발신부를 지지하는 지지대를 포함한다.
