Investigation on Laser Damage Probability of Fused Silica with Simultaneous Multi-wavelength Irradiation

Gao, Xiang; Yao, Ke; Luo, Yanhua; Jiang, Yi; Qiu, Rong; Jiang, Yong; Zhou, Qiang; Tang, Sisi; Zhou, Guorui

doi:10.1007/s11468-017-0552-y

Cited by 4 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to its excellent optical properties, fused silica is often used as a diffractive optical element and a focusing optical lens in the terminal device of high-power laser systems [ 1 , 2 ]. As high-powered laser optics are difficult to fabricate and easy to damage during application, it is very difficult to meet the requirements only by manufacturing methods [ 3 ]. Therefore, methods of repairing and reusing damaged components are urgently needed [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Rapid and Non-Destructive Repair of Fused Silica with Cluster Damage by Magnetorheological Removing Method

et al. 2021

View full text Add to dashboard Cite

The damage repair of fused silica based on the CO2 laser repair technique has been successfully applied in high-power laser systems in the controllable nuclear fusion field. However, this kind of repairing technique mainly focuses on large-scale laser damage with sizes larger than 200 μm, but ignores the influence of cluster small-scale damage with sizes smaller than 50 μm. In order to inhibit the growth of small-scale damage and further improve the effect of fused silica damage repair, this paper carried out a study on the repair of fused silica damage using the magnetorheological (MR) removing method. The feasibility of fused silica damage repairing was verified, and the evolution law of the number, morphology, and the surface roughness of small-scale damage were all analyzed. The results showed that the MR removing method was non-destructive compared to traditional repairing technologies. It not only effectively improved the whole damage repairing rate to more than 90%, but it also restored the optical properties and surface roughness of the damaged components in the repairing process. Based on the study of the MR removing repair law, a combined repairing process of 4 μm MR removal and 700 nm computer controlled optical surfacing (CCOS) removal is proposed. A typical fused silica element was experimentally repaired to verify the process parameters. The repairing rate of small-scale damage was up to 90.4%, and the surface roughness was restored to the level before repairing. The experimental results validate the effectiveness and feasibility of the combined repairing process. This work provides an effective method for the small-scale damage repairing of fused silica components.

show abstract

Section: Introductionmentioning

confidence: 99%

Rapid and Non-Destructive Repair of Fused Silica with Cluster Damage by Magnetorheological Removing Method

et al. 2021

View full text Add to dashboard Cite

show abstract

“…During the frequency conversion, the generation of 351 nm (3ω) light will be accompanied by residual 1053 nm (1ω) and 527 nm (2ω) ones [4][5][6]. Thus the mechanism on laser damage morphology in downstream optics under simultaneous exposure to multi-wavelength lasers is of interest in understanding of LID phenomenon [7][8][9][10]. Meanwhile, the increase of applications for small size cavities without an injection seeder requires considering the influence of multiple longitudinal mode (MLM) laser pulses on LID [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Laser damage morphology in fused silica induced by simultaneous multi-wavelength irradiation with multiple longitudinal modes

et al. 2018

Self Cite

View full text Add to dashboard Cite

The influence of multiple longitudinal mode pulses on laser-induced damage at the exit surface of fused silica is investigated under simultaneous exposure to multi-wavelength lasers. The typical damage morphologies are systematically observed after a series of experiments have been conducted on fused silica samples by the equipment for multi-wavelength damage test. By means of the calculation for incubation and expansion fluences determined from the diameter of the ring pattern, the role of the each wavelength laser in damage process has been identified. The results provide insight into the information on the precursor reactiveness under simultaneous exposure to dual-wavelength pulses.

show abstract

Multi-wavelength coupling effect of laser-induced defect damage in beam splitter films captured by a three-dimensional spatially and temporally resolved method

Shan

Zhao

Gao

et al. 2020

Optics & Laser Technology

View full text Add to dashboard Cite

Investigation on Laser Damage Probability of Fused Silica with Simultaneous Multi-wavelength Irradiation

Cited by 4 publications

References 27 publications

Rapid and Non-Destructive Repair of Fused Silica with Cluster Damage by Magnetorheological Removing Method

Rapid and Non-Destructive Repair of Fused Silica with Cluster Damage by Magnetorheological Removing Method

Laser damage morphology in fused silica induced by simultaneous multi-wavelength irradiation with multiple longitudinal modes

Multi-wavelength coupling effect of laser-induced defect damage in beam splitter films captured by a three-dimensional spatially and temporally resolved method

Contact Info

Product

Resources

About