Optical low coherence reflectometry with 1.9 μm spatial resolution

High-Resolution Optical Coherence Tomography-Guided Laser Ablation of Surgical Tissue

“…Hence, larger spectral bandwidths can improve axial resolution. Axial resolutions as high as 1.9 m have been achieved using broader bandwidth laser sources at shorter wavelengths near 800 nm [27,28]. Shorter wavelengths, however, are absorbed and scattered more in biological tissue, resulting in decreased imaging penetration.…”

Performance of ar/sup +/ -milled ti:sapphire rib waveguides as single transverse-mode broadband fluorescence sources

“…Approximately 2-m resolution has been demonstrated using a Ti:sapphire bulk fluorescent emitter [3] and slow in vivo scanning can be performed in this way [4]. However, these sources are insufficient for fast-scanning OCT due to their low brightness.…”

Ultrahigh resolution optical coherence tomography using a superluminescent light source

“…Fluorescence from Ti:Al 2 O 3 and laser dyes have been demonstrated as sources for ultrahigh resolution low coherence reflectometry. 9,10 Low coherence reflectometry with <2 µm axial resolution was first demonstrated in Ti:Al 2 O 3 using 4.8 µW fluorescence produced from a Ti:Al 2 O 3 crystal pumped by a 20 W Argon laser. While this result demonstrated the highest resolution low coherence reflectometry achieved at that time, the output powers were not sufficient to permit imaging.…”