High conversion efficiency femtosecond optical parametric amplifier based on silicon waveguide in mid-infrared

High conversion efficiency femtosecond optical parametric amplifier based on silicon waveguide in mid-infrared
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基于硅波导的中红外高转换效率飞秒光参量放大器

DOI:
10.1016/j.optlastec.2013.02.017
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发表时间:
2013-09
影响因子:
5
通讯作者:
Sun, Qibing
Sun, Qibing
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Wen, Jin;Liu, Hongjun;Huang, Nan;Sun, Qibing

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提出了硅波导中红外飞秒光学参量放大器(OPA)并进行了数值研究。通过适当设计波导尺寸,可以将硅波导的零色散波长定制为2.1μm,并实现宽带相位匹配。我们在 8 毫米长的硅波导中实现了 -40dB 的转换效率和超过 300nm 的转换带宽,实现了低泵浦峰值功率。我们还分析了光参量放大过程中泵浦脉冲、信号脉冲和闲频脉冲的演变。所提出的OPA具有紧凑的结构,可以在集成宽带光源和中红外超快全光信号处理中找到重要的应用。
The mid-infrared femtosecond optical parametric amplifier (OPA) in silicon waveguide is proposed and investigated numerically. Through appropriately engineering the waveguide dimensions, the zero-dispersion wavelength of the silicon waveguide can be tailored to 2.1μm and the broadband phase-matching can be realized. We achieve a conversion efficiency of −40dB and a conversion bandwidth of over 300nm for a low pump peak power in 8-mm-long silicon waveguide. We also analyze the evolution of the pump, signal and idler pulses in the process of optical parametric amplification. The proposed OPA exhibits compact configuration and can find important applications in integrated broadband optical source and ultrafast all-optical signal processing in mid-infrared.
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