Fabrication of 2.5D feature by fiber laser step down milling approach on Z-A composite intended for bone scaffolding

Rout, Sweta; Patel, Saroj Kumar

doi:10.1016/j.optlastec.2022.108322

Cited by 12 publications

(1 citation statement)

References 44 publications

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“…Typically, the Q-switched laser pulses meet the stress confinement (i.e., isochoric heat deposition) in that the pulse duration is shorter than the stress relaxation time (1 μs) [8]. Because of instant heat deposition upon volumetric light absorption in a target, the Q-switched laser system has been applied in various fields, such as micromachining, scaffold fabrication, and laser-tissue resection [9][10][11]. However, a single pulse with a high peak power often causes undesirable damage to optical components and target materials [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of dual‐optical pulses with temporal energy distribution on laser ablation performance in in vivo zebrafish model

Shin,

Lee,

Hwang

et al. 2023

Journal of Biophotonics

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A Q‐switched laser system has been used in a single‐pulse mode for skin melasma treatments because of instant heat deposition in the target. Despite the efficient ablation of the melanophores in the skin, the single, high‐fluence pulse often causes undesirable damage to the surrounding tissue, leading to high recurrence rates. This study aims to investigate the feasibility of dual‐optical pulses with a temporal energy distribution on the melasma treatment in in vivo zebrafish models in comparison to that of the single optical pulse. Based on the optical detection, the dual‐optical pulses had a temporal energy distribution ratio of 4:1 and an interval of 61 μs between the two consecutive pulses. According to the histological analysis, the dual pulses removed melanophores and induced a few apoptotic nuclei with minimal recurrence. This study demonstrated that the feasibility of dual‐optical pulses (energy ratio = 4:1) could enhance the laser ablation performance in vivo.This article is protected by copyright. All rights reserved.

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