【摘要】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.
【会议名称】 Advances in Adaptive Optics II pt.3
【会议地点】OrlandoFL(US)
【作者】W. Hackenberg;M. Zaehringer;A. Silber;
【作者单位】European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany;
【会议组织】
【会议召开年】2006
【页码】P.62724D.1-62724D.8
【总页数】8
【原文格式】PDF
【正文语种】eng
【中图分类】P111.3;TH751;
【关键词】laser guide star;fiber optics;electro-optical modulator;stoichiometric lithium tantalate;
