We report spectral domain optical coherence tomography (SDOCT) with a supercontinuum source based on a photonic
crystal fiber pumped with nanosecond laser pulses. The Q-switched Nd:YAG microchip laser produces 0.6 ns duration
pulses at 1064 nm with 8 μJ of energy at a 6.6 kHz repetition rate. These pulses are sent through 3 m of photonic crystal
fiber with a zero dispersion wavelength of 1040 nm. The fiber output is coupled into a fiber-based SDOCT system
operating at a central wavelength of 800 nm. The A-line acquisition rate is 6.6 kHz, where each A-line is produced by a
single supercontinuum pulse. Point spread function measurements show excellent resolution, but sensitivity is degraded
by spectral fluctuations of individual supercontinuum pulses. Test images show less dynamic range compared to a
Ti:Sapphire femtosecond laser based system. However, this supercontinuum source has potential for stroboscopic
illumination in time-resolved low coherence interferometry.
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