Long-range optical coherence tomography with extended depth-of-focus: avisual feedback system for smart laser osteotomy
Arsham Hamidi, Yakub A. Bayhaqi, Ferda Canbaz, Alexander A. Navarini, Philippe C. Cattin, Azhar Zam
Abstract
This work presents a long-range and extended depth-of-focus optical coherence tomography (OCT) system using a Bessel-like beam (BLB) as a visual feedback system during laser osteotomy. We used a swept-source OCT system ( λ c = 1310 nm) with an imaging range of 26.2 mm in the air, integrated with a high energy microsecond Er:YAG laser operating at 2.94 µm. We demonstrated that the self-healing characteristics of the BLB could reduce the imaging artifacts that may arise during real-time monitoring of laser ablation. Furthermore, the feasibility of using long-range OCT to monitor a deep laser-induced incision is demonstrated.
Topics & Concepts
Optical coherence tomographyOpticsLaserDepth of fieldFocus (optics)Depth of focus (tectonics)Materials scienceCoherence (philosophical gambling strategy)AblationMedicinePhysicsGeologyInternal medicineQuantum mechanicsTectonicsPaleontologySubductionOptical Coherence Tomography ApplicationsIntraocular Surgery and LensesCorneal surgery and disorders