Pourya Heidari Orojloo

The phase shift method is generally used for wavelength (chromatic) dispersion measurement of optical fibers. However, the phase shift method requires a long fiber under test (FUT) of several hundred meters or more to obtain high temporal resolution. Therefore, measuring specialty fibers with short production lengths and amplification fibers that absorb light at specific wavelengths used for fiber lasers is difficult with this method.

Due to its inert surface, producing adhesive bonds on nickel is challenging and requires a surface pretreatment. A laser pretreatment process on nickel is investigated using a Yb:YAG slab laser at 780 fs pulse length. The process is varied in pulse density, pulse energy, and focus position to produce various surface structures on a nanometer scale. The surface structures are categorized topologically in scanning electron microscopy (SEM).

Additive manufacturing (AM) has revolutionized the production of high-performance components, particularly in industries like motorsport and aerospace. This study investigates the mechanical properties of AM-produced AlSi10Mg and introduces a novel Al2024-RAM2C alloy, designed to elevate the performance benchmarks of AM aluminum alloys in demanding environments.