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Opt Lett. 1998 Jun 1;23(11):834-6.

Phase-conjugating stimulated Brillouin scattering mirror for low powers and reflectivities above 90% in an internally tapered optical fiber.


A novel low-power phase-conjugating mirror based on stimulated Brillouin scattering in a quartz fiber with an internal taper is reported. A peak-power threshold as low as 500 W and a maximum reflectivity of 92% were obtained with 30-ns pulses from a Q -switched Nd:YAG laser. The maximum peak powers of 130 kW demonstrated a dynamic range of 1:260. Reliable operation in both single- and multiple-longitudinal-mode operation was observed with conjugation fidelities larger than 95%.

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