本文从理论和数值模拟上分析了一种短程有序铁电畴结构中二次谐波的产生过程.这种短程有序结构是由一系列一定长度的周期极化铁电畴结构和任意长度的单畴结构交替构成.研究了结构参数对频率变化过程中频谱带宽和转换效率的影响.结果表明,转换效率可以通过增加短程有序结构的晶体长度得到提高,而频谱带宽的大小可以通过调节周期极化结构的长度加以控制.
参考文献
| [1] | Fejer M.M.;Magel G.A. .Quasi-phase-matched second harmonic generation: tuning and tolerances[J].IEEE Journal of Quantum Electronics: A Publication of the IEEE Quantum Electronics and Applications Society,1992(11):2631-2654. |
| [2] | Fujioka N;Ashihara S;Ono H;Shimura T;Kuroda K .Cascaded third-harmonic generation of ultrashort optical pulses in two-dimensional quasi-phase-matching gratings[J].Journal of the Optical Society of America, B. Optical Physics,2007(9):2394-2405. |
| [3] | Satoshi Ashihara;Tsutomu Shimura;Kazuo Kuroda;Nan Ei Yu;Sunao Kurimura;Kenji Kitamura;Myoungsik Cha;Takunori Taira .Optical pulse compression using cascaded quadratic nonlinearities in periodically poled lithium niobate[J].Applied physics letters,2004(7):1055-1057. |
| [4] | Asobe M;Yokohama I;Itoh H;Kaino T .All-optical switching by use of cascading of phase-matched sum-frequency-generation and difference-frequency-generation processes in periodically poled LiNbO3[J].Optics Letters,1997(5):274-276. |
| [5] | Berger V. .Nonlinear photonic crystals[J].Physical review letters,1998(19):4136-4139. |
| [6] | Tehranchi A.;Kashyap R. .Design of Novel Unapodized and Apodized Step-Chirped Quasi-Phase Matched Gratings for Broadband Frequency Converters Based on Second-Harmonic Generation[J].Journal of Lightwave Technology: A Joint IEEE/OSA Publication,2008(3):343-349. |
| [7] | 田甜,孔勇发,刘士国,李威,武莉,陈绍林,许京军.掺钼铌酸锂晶体的光折变性能研究[J].人工晶体学报,2013(08):1487-1491. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%