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physics.optics2026
Few-picosecond pulse generation featuring ultrafast spectral dynamics in gain-switched surface-grating DFB lasers via impulsive optical pumping
Yihan Qi, Fuyi Cao, Hidekazu Nakamae +7
To investigate the physics of picosecond gain-switching dynamics in single-mode lasers under femtosecond optical pumping at room temperature, we designed and fabricated first-order…
physics.optics2025
Direct observation of room-temperature exciton condensation
Jiaxin Yu, Guangyu Dai, Shuai Xing +6
Exciton condensation--an interaction-driven, macroscopically coherent paired-fermion state--offers the prospect for dissipationless energy transport in solids, akin to that in supe…