3 papers
physics.optics2024
Controlling ultrafast laser writing in silica glass by pulse temporal contrast
Yuhao Lei, Huijun Wang, Gholamreza Shayeganrad +2
Control of laser writing in transparent dielectrics using temporal contrast of light pulses is demonstrated. Anisotropic nanopores in silica glass are produced by high-contrast of…
physics.ins-det2018
High resolution nanofocus X-ray source based on ultracold electrons from laser cooled-atoms
Gholamreza Shayeganrad
X-ray 3D tomography is So far limited to micron resolution because of the large focusing spot of the focused electron beam on the metal target. Here, we proposed a nanofocous X-ray…
physics.optics2017
Efficient, self-phase matched, narrow-band, engineered shape, tunable high-order harmonic generation based on femtosecond dynamic grating
L. Mashhadi, G. Shayeganrad
The high-order harmonic generation (HHG), if phase matched, opens a unique way to produce coherent ultrafast extreme-UV (XUV) or soft x-ray light sources. Here we describe a robust…