Abstract

We report on a high-speed, high-efficiency, high-duty-cycle, path-length-maintaining and linear beam scanner suitable for en face scanning optical coherence microscopy. Fast transverse beam scanning is achieved by use of a double-reflection polygon mirror (DRPM) rotating at a constant speed. With a motor speed of $\mathrm{18,000}\mathrm{rpm}$ and a scanner diameter of $50\mathrm{mm}$, the DRPM provides a line rate up to $3\mathrm{kHz}$, $\pm 1.8°$ scanning range, and 90% duty cycle. A much higher scanning speed and much larger scanning range can be readily achieved by increasing the scanner diameter.

© 2007 Optical Society of America

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