Mid-IR dual-wavelength difference frequency generation in uniform grating PPLN using index dispersion control

Mid-IR dual-wavelength difference frequency generation in uniform grating PPLN using index dispersion control
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使用折射率色散控制在均匀光栅 PPLN 中产生中红外双波长差频

DOI:
10.1088/1674-1056/22/12/124204
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发表时间:
2013-12
期刊:
Chin. Phys. B
影响因子:
--
通讯作者:
Zhang Chuang
Zhang Chuang
中科院分区:
其他
文献类型:
--
作者:
Chang Jian-Hua;Sun Qing;Ge Yi-Xian;Wang Ting-Ting;Tao Zai-Hong;Zhang Chuang

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提出了一种利用均匀光栅周期极化的双波长中红外差频产生器(DFG)方案。利用PPLN晶体的温度色散特性,泵浦光的准相位匹配(QPM)峰可以演化为两个独立的峰,并且随着晶体温度的降低,两个峰之间的波长间隔增大。这样的两个泵浦QPM峰值可以允许同时的双波长中IR激光辐射,同时适当地设置两个基本泵浦波长。利用该方案,在晶体温度为90、65和30 °C时,分别获得了3.228和3.548、3.114和3.661以及3.019和3.76 μm的中红外双波长激光辐射。
A novel widely tunable dual-wavelength mid-IR difference frequency generation (DFG) scheme with uniform grating periodically poled lithium niobate (PPLN) is presented in this paper. By using the temperature-dependent dispersion property of PPLN, the quasi-phase matching (QPM) peak for the pump may evolve into two separate ones and the wavelength spacing between them increases with the decrease of the crystal temperature. Such two pump QPM peaks may allow simultaneous dual-wavelength mid-IR laser radiations while properly setting the two fundamental pump wavelengths. With this scheme, mid-IR dual-wavelength laser radiations at around 3.228 and 3.548, 3.114 and 3.661, and 3.019 and 3.76 μm, are experimentally achieved for the crystal temperatures of 90, 65, and 30 °C, respectively, based on the fiber laser fundamental lights.
DOI: 10.1364/ol.32.001138
发表时间: 2007-05-01
期刊: OPTICS LETTERS
影响因子: 3.6
作者:
Erny, C.;Moutzouris, K.;Keller, U.
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