期刊
OPTICS EXPRESS
卷 25, 期 6, 页码 6963-6973出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.25.006963
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资金
- National Science Foundation (NSF) [ECCS-1609549]
- AFOSR MURI on Quantum Memories [FA9550-12-1-0025]
- National Natural Science Foundation of China [11374289, 61590932]
- Fundamental Research Funds for the Central Universities of China
- National Nanotechnology Infrastructure Network (NNIN) Research Experience for Undergraduates (REU) program
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1609549] Funding Source: National Science Foundation
Integrated thin-film lithium niobate platform has recently emerged as a promising candidate for next-generation, high-efficiency wavelength conversion systems that allow dense packaging and mass-production. Here we demonstrate efficient, phase-matched second harmonic generation in lithographically-defined thin-film lithium niobate waveguides with sub-micron dimensions. Both modal phase matching in fixed-width waveguides and quasi-phase matching in periodically grooved waveguides are theoretically proposed and experimentally demonstrated. Our low-loss (similar to 3.0 dB/cm) nanowaveguides possess normalized conversion efficiencies as high as 41% W(-1)cm(-2). (C) 2017 Optical Society of America
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