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- W4323655616 abstract "Photoacoustic (PA) wavefront shaping (WS; PAWS) could allow focusing light deep in biological tissue. This could enable increasing the penetration depth of biomedical optical techniques including PA imaging. However, focussing at depth requires a light source of long coherence length (CL), presenting a challenge because the CLs of typical PA excitation lasers are short. To address this challenge, we developed a PAWS system based on an externally modulated external cavity laser with a long CL. The system was demonstrated by focussing light through rigid scattering media using both PAWS and optical WS. PAWS enabled focussing through diffusers with 8 × enhancements, while all-optical WS enabled focussing through various scattering media including a 5.8 mm thick tissue phantom. By enabling PAWS with increased coherence, the system could facilitate exploring the practical depth limits of PAWS, paving the way to focussing light deep in tissue." @default.
- W4323655616 created "2023-03-10" @default.
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- W4323655616 date "2023-03-09" @default.
- W4323655616 modified "2023-10-17" @default.
- W4323655616 title "Photoacoustic wavefront shaping with a long coherence length laser" @default.
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- W4323655616 doi "https://doi.org/10.1117/12.2652242" @default.
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