Resonant electro-optical modulator for high laser-power single-mode fiber relay

W. Hackenberg; M. Zaehringer; A. Silber

doi:10.1117/12.673190

27 June 2006 Resonant electro-optical modulator for high laser-power single-mode fiber relay

W. Hackenberg, M. Zaehringer, A. Silber

Proceedings Volume 6272, Advances in Adaptive Optics II; 62724D (2006) https://doi.org/10.1117/12.673190
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

We describe the design and performance of a resonant electro-optical modulator, based on stoichiometric lithium tantalate, capable of handling high optical powers and providing a large modulation depth. This phase modulator is part of the single-mode fiber relay used in the ESO VLT Laser Guide Star Facility for adaptive optics to transport 589-nm laser light from the PARSEC dye laser installed in the laser clean room to the laser launch telescope. The purpose of the phase modulator is to broaden the single-frequency PARSEC laser linewidth before the laser light is injected into the single-mode relay fiber. By this the power handling capability of the single-mode fiber is increased by a factor of 3 or 10 W of in-coupled power at 589 nm, while maintaining the excitation efficiency of the mesospheric sodium D2 transition.

Citation Download Citation

W. Hackenberg, M. Zaehringer, and A. Silber "Resonant electro-optical modulator for high laser-power single-mode fiber relay", Proc. SPIE 6272, Advances in Adaptive Optics II, 62724D (27 June 2006); https://doi.org/10.1117/12.673190

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