We report on the fabrication of the stressed optical waveguide with tubular depressedrefractive-index cladding in phosphate glasses by use of femtosecond vortex beam. Strained regions were emerged in domains surrounding the tubular track. Waveguiding occurs mainly within the tube induced by femtosecond laser.

Abstract As an important parameter in laser additive remanufacturing technology, cladding thickness is related to the quality of remanufacturing. Thickness detection during process can help improve and facilitate manual adjustment parameters real time optimize thickness. This system develops a set based on displacement sensor. The consists hardware software parts. part includes sensor, mounting...

Laser cladding is a promising surface treatment for refurbishing worn-out cast-iron brake rotors. Previous studies on laser-cladded rotors have demonstrated their extensively higher wear and greater airborne particle emissions, compared with traditional cast iron In order to overcome this, commercial non-asbestos organic (NAO) material tested against Fe-based Two low-metallic pad materials are ...

High power, high brightness fiber lasers have numerous potential commercial and military applications. These lasers offer unique flexibility as they may be coherently combined to provide a potential multi-kilowatt laser source and integrated delivery system. Fiber lasers with cladding pump designs represent a new generation of diode pumped configurations that are extremely efficient, have singl...

We demonstrate a single-frequency gain-switched Ho-doped fiber laser based on heavily doped silicate glass fiber fabricated in-house. A Q-switched Tm-doped fiber laser at 1.95 μm was used to gain-switch the Ho-doped fiber laser via in-band pumping. Output power of the single-frequency gain-switched pulses has been amplified in a cladding-pumped Tm-Ho-codoped fiber amplifier with 1.2 m active fi...

Laser cladding, a novel surface treatment technology, utilizes high-energy laser beam to melt diverse alloy compositions and form specialized alloy-cladding layer on the of substrate enhance its property. However, it can generate substantial residual stresses during rapid cooling heating stages, due inadequate selection cladding process parameters disparities in thermophysical properties betwee...

Abstract The complicated deep-sea high-pressure environment poses a significant challenge for laser cladding. To solve this problem, an simulation test bed cladding is developed in paper. First, principle of testbed proposed, which can provide water underwater experiments. Based on the design, structure modeled three dimensions, carry out Then, strength pressure chamber analyzed by finite eleme...