High-efficiency electro-optic amplitude modulation with delayed coherent addition

被引：3

作者：

Ohmae, Noriaki ^{[1
]}

Moriwaki, Shigenori ^{[1
]}

Mio, Norikatsu ^{[1
]}

机构：

[1] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan

来源：

OPTICS LETTERS | 2011年 / 36卷 / 02期

基金：

日本学术振兴会;

关键词：

EXTRACTION;

D O I：

10.1364/OL.36.000238

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Amplitude modulation of laser light is required for resonant sideband extraction employed in gravitational-wave detectors. Amplitude modulation with electro-optic phase modulators is realized by interferometric phase-to-amplitude conversion. Although two outputs modulated at opposite phases to each other are obtained, usually only one of them is utilized and the other is abandoned. The reuse of this abandoned light improves the power efficiency of the modulation. This can be realized by inverting the modulation phase of one output with a delay line and adding it to the other coherently. Moreover, this system selects a high-efficiency operating point and modulates the light in a linear range. We demonstrate that the modulation system can be operated with a power loss that is due only to the losses of the optical components. (C) 2011 Optical Society of America

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收藏

页码：238 / 240

页数：3

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