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physics.optics2026
Mode locking by phase-sensitive amplification
Francesco De Lucia, Yifan Sun, Georges Semaan +4
Mode locking is the mechanism by which lasers organize many optical modes into stable trains of ultrashort pulses. It underpins optical frequency combs, precision timing and spectr…
physics.optics2026
Temporal soliton generation in an ultra-high-effective-Q Kerr resonator enabled by Raman gain
Georges Semaan, Yifan Sun, Nicolas Englebert +2
We demonstrate temporal pattern formation in a coherently driven fiber ring cavity whose effective finesse is continuously reconfigured using distributed Raman amplification. We ac…