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We use polarization-dependent gain in a twisted birefringent medium to realize a sub-megahertz linewidth optical feature. Our approach is loss-free, resonator-free, and cost-effective, offering high sensitivity and on-demand tunability.
Neel Choksi,Yi Liu,Rojina Ghasemi, andLi Qian
"Sub-megahertz optical features using a resonator-free twisted Brillouin gain medium", Proc. SPIE 12407, Laser Resonators, Microresonators, and Beam Control XXV, 1240703 (15 March 2023); https://doi.org/10.1117/12.2656954
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Neel Choksi, Yi Liu, Rojina Ghasemi, Li Qian, "Sub-megahertz optical features using a resonator-free twisted Brillouin gain medium," Proc. SPIE 12407, Laser Resonators, Microresonators, and Beam Control XXV, 1240703 (15 March 2023); https://doi.org/10.1117/12.2656954