Paper 13139-39
Paper 13139-39
A comparative study of supercontinuum generation in scintillator crystals pumped by near-infrared femtosecond laser pulses
19 August 2024 • 5:30 PM - 7:00 PM PDT | Conv. Ctr. Exhibit Hall A
Abstract
We present a comparative experimental investigation of supercontinuum generation in scintillator crystals: bismuth germanate (BGO), yttrium orthosilicate (YSO), lutetium oxyorthosilicate (LSO), lutetium yttrium oxyorthosilicate (LYSO) and gadolinium gallium garnet (GGG), pumped by 180 fs pulses from an amplified Yb:KGW laser. We demonstrate that the tested materials exhibit low supercontinuum generation thresholds (< 100 nJ) and significant red-shifted spectral broadenings (>1700 nm) while also offering long-term damage-free operation at even MHz repetition rate. This suggests their potential as excellent alternatives for high average power SCG in the near-infrared spectral range, thereby contributing to the advancement of ultrafast spectroscopic and imaging systems.
Presenter
Vilnius Univ. (Lithuania)
Vaida Marčiulionytė received her BSc degree in Applied Physics in 2019 and her MSc degree in Laser Physics and Optical Technologies in 2021 at Vilnius University, Lithuania. Since 2021, she is a doctoral student at the Ultrafast Nonlinear Optics Group at Laser Research Center of Vilnius University. Her research focuses on spectrum broadening and supercontinuum generation in bulk materials at high laser pulse repetition rates.