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physics.optics2025
Correction of broadband terahertz electro-optic sampling with GaSe crystals
Kotaro Ogawa, Natsuki Kanda, Yuta Murotani +3
Gallium selenide (GaSe) is an efficient nonlinear crystal for electro-optic (EO) sampling in the multi-terahertz (THz) frequency range. However, the lattice resonance at several TH…
physics.optics2025
Robust asynchronous optical sampling terahertz spectroscopy using commercially available free-running lasers
Mayuri Nakagawa, Natsuki Kanda, Hidekazu Nakamae +2
This study presents asynchronous optical sampling (ASOPS) terahertz spectroscopy using commercially available Ti:Sapphire lasers without stabilizing repetition frequency. Our postp…
physics.optics2024
Programmable generation of counterrotating bicircular light pulses in the multi-terahertz frequency range
Kotaro Ogawa, Natsuki Kanda, Yuta Murotani +1
The manipulation of solid states using intense infrared or terahertz light fields is a pivotal area in contemporary ultrafast photonics research. While conventional circular polari…