Abstract
A novel flexible scanning optical probe is constructed with a finely etched optical fiber strung through a platinum coil in the lumen of a dissipative polymer. The packaged probe is in diameter with a rigid length of when using a ball lens or when scanning the fiber proximal to a gradient-index (GRIN) lens. Driven by constant high voltage at low current , the probe oscillates to provide wide forward-viewing angle ( and with ball and GRIN lens designs, respectively) and high-frame-rate operation. Motion of the probe tip is observed with a high-speed camera and compared with theory. Optical coherence tomography (OCT) imaging with the probe is demonstrated with a wavelength-swept source laser. Images of an IR card as well as in vivo Doppler OCT images of a tadpole heart are presented. This optomechanical design offers a simple, inexpensive method to obtain a high-frame-rate forward-viewing scanning probe.
© 2008 Optical Society of America
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