期刊
OPTICS EXPRESS
卷 17, 期 25, 页码 22609-22615出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.022609
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资金
- National Science Foundation (NSF) [DMR-0757112]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [757112] Funding Source: National Science Foundation
We demonstrate second harmonic generation in photonic crystal nanocavities fabricated in the semiconductor gallium phosphide. We observe second harmonic radiation at 750 nm with input powers of only nanowatts coupled to the cavity and conversion efficiency P-out = P-in,coupled(2) = 430%/W. The large electronic band gap of GaP minimizes absorption loss, allowing efficient conversion. Our results are promising for integrated, low-power light sources and on-chip reduction of input power in other nonlinear processes. (C) 2009 Optical Society of America
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