中国激光, 2012, 39 (2): 0202008, 网络出版: 2012-01-06   

半导体薄膜实现Nd:YVO4 1064 nm和1342 nm双波长激光被动调Q

Semiconductor Film Passively Q-Switching for Dual-Wavelength Lasers at 1064 nm and 1342 nm in Nd:YVO4 Laser
作者单位
华侨大学信息科学与工程学院, 福建 厦门 361021
摘要
采用射频磁控溅射和热退火处理技术制备SiNx/Si/SiNx多层薄膜,测试了纳米硅晶粒平均尺寸、光学带隙和薄膜对1064 nm激光的非线性吸收系数。建立SiNx/Si/SiNx多层薄膜被动调Q的Nd:YVO4双波长激光器速率方程,得到双波长调Q脉冲的数值模拟结果。在激光二极管(LD)端面抽运的三镜复合腔Nd:YVO4激光器中,SiNx/Si/SiNx多层薄膜作为可饱和吸收体同时实现了双波长激光被动调Q,获得20 ns的1064 nm激光脉冲和19 ns的1342 nm激光脉冲输出。研究表明,薄膜对1064 nm和对1342 nm的双光子饱和吸收是双波长激光被动调Q的直接原因;激光器两个支腔输出损耗的差别和薄膜对两个波长的非线性吸收系数的相对值影响了双波长脉冲的宽度和时间间隔。
Abstract
The SiNx/Si/SiNx multi-layer film is prepared by radio-frequency magnetron sputtering and thermal annealing. The average grain size of nanocrystalline silicon, the optical band-gap and the nonlinear absorption coefficient at 1064 nm laser are characterized and estimated. The rate-equation theoretical model of the dual-wavelength laser passively Q-switched by SiNx/Si/SiNx multi-layer film is established and the dynamics of the dual-wavelength pulse formation is numerically calculated. Simultaneous dual-wavelength passive Q-switching is realized in a laser diode (LD) end-pumped three-mirror compound resonator Nd:YVO4 laser using SiNx/Si/SiNx film as the saturable absorber. Both 1064 nm pulse with 20 ns duration and 1342 nm pulse with 19 ns duration are obtained. The results show that dual-wavelength passive Q-switching mainly results from two-photon saturable absorptions for 1064 nm and 1342 nm lasers, and that the difference of output losses between the two overlapping collinear cavities and the relative nonlinear absorption coefficients for dual-wavelength lasers influence the pulse durations and time separation of dual-wavelength pulses.
参考文献

[1] H. Y. Shen, R. R. Zeng, Y. P. Zhou et al.. Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2[J]. Appl. Phys. Lett., 1990, 56(20): 1937~1938

[2] Y.-F. Chen. CW dual-wavelength operation of a diode-end-pumped Nd:YVO4 laser[J]. Appl. Phys. B, 2000, 70(4): 475~478

[3] 张强, 姚建姾, 温伍麒 等. 高功率激光二极管抽运Nd:YAG连续双波长激光器[J]. 中国激光, 2006, 33(5): 577~581

    Zhang Qiang, Yao Jianquan, Wen Wuqi et al.. High power laser diode pumped Nd:YAG continuous wave dual-wavelength laser[J]. Chinese J. Lasers, 2006, 33(5): 577~581

[4] 张峻诚, 王加贤, 苏培林 等. 激光二极管抽运Nd:YVO4和频黄光激光器的理论及实验研究[J]. 光学学报, 2008, 28(12): 2365~2369

    Zhang Juncheng, Wang Jiaxian, Su Peilin et al.. Theoretical and experimental study of LD pumped Nd:YVO4 yellow laser with sum-frequency mixing[J]. Acta Optica Sinica, 2008, 28(12): 2365~2369

[5] Yang Tan, Yuechen Jia, Feng Chen et al.. Simultaneous dual-wavelength lasers at 1064 nm and 1342 nm in femtosecond-laser-written Nd:YVO4 channel waveguides[J]. J. Opt. Soc. Am. B, 2011, 28(7): 1607~1610

[6] X. P. Hu, G. Zhao, Z. Yan et al.. High-power red-green-blue laser light source based on intermittent oscillating dual-wavelength Nd:YAG laser with a cascaded LiTaO3 superlattice[J]. Opt. Lett., 2008, 33(4): 408~410

[7] G. A. Henderson. A computational model of a dual-wavelength solid-state laser[J]. J. Appl. Phys., 1990, 68(11): 5451~5454

[8] 林文雄, 沈鸿元. 一种新型结构的Nd:YAlO3双波长调Q脉冲激光器[J]. 物理学报, 1999, 48(4): 667~672

    Lin Wenxiong, Shen Hongyuan. A new configuration of the laser cavity for simultaneous dual wavelength Q-switch pulsed Nd:YAlO3 laser[J]. Acta Physica Sinica, 1999, 48(4): 667~672

[9] Y. F. Chen, Y. S. Chen, S. W. Tsai. Diode-pumped Q-switched laser with intracavity sum frequency mixing in periodically poled KTP[J]. Appl. Phys. B, 2004, 79(2): 207~210

[10] H. T. Huang, J. L. He, B. T. Zhang et al.. Intermittent oscillation of 1064 nm and 1342 nm obtained in a diode-pumped doubly passively Q-switched Nd:YVO4 laser[J]. Appl. Phys. B, 2009, 96(4): 815~820

[11] S. Furukawa, T. Miyasato. Quantum size effects on the optical band gap of microcrystalline SiH[J]. Phys. Rev. B, 1988, 33(8): 5726~5729

[12] G. V. Prakash, M. Cazzanelli, Z. Gaburro et al.. Linear and nonlinear optical properties of plasma-enhanced chemical-vapour deposition grown silicon nanocrystals[J]. J. Mod. Opt., 2002, 49(5/6): 719~730

[13] 姚伟国, 岳兰平, 戚震中 等. 镶嵌在SiO2薄膜中的锗纳米晶粒的光致发光[J]. 功能材料, 1997, 28(5): 477~488

    Yao Weiguo, Yue Lanping, Qi Zhenzhong et al.. Visible photoluminescence of Ge nanocrystallites embedded in SiO2 thin film[J]. J. Functional Material, 1997, 28(5): 477~488

[14] M. Sheik-Bahae, A. A. Said, T. H. Wei et al.. Sensitive measurement of optical nonlinearities using a single beam[J]. IEEE J. Quantum Electron., 1990, 26(4): 760~769

[15] T. T. Kajava, A. L. Gaeta. Intra-cavity frequency-doubling of a Nd:YAG laser passively Q-switched with GaAs[J]. Opt. Commun., 1997, 137(1-3): 93~97

[16] A. W. Tucker, M. Birnbaum, C. L. Fincher et al.. Stimulated-emission cross section at 1064 and 1342 nm in Nd:YVO4[J]. J. Appl. Phys., 1977, 48(12): 4907~4911

[17] L. Banyai, P. Gilliot, Y. Z. Hu et al.. Surface-polarization instabilities of electron-hole pairs in semiconductor quantum dots[J]. Phys. Rev. B, 1992, 45(24): 14136~14142

[18] Ma Zhixun, Liao Xianbo, Kong Guanglin et al.. Optical properties of nanocrystalline silicon embedded in SiO2[J]. Science in China (Series A), 1999, 42(9): 995~1002

[19] 刘宁宁, 孙甲明, 潘少华 等. a-Si/SiO2超晶格结构的非线性光学性质[J]. 科学通报, 2000, 45(22): 2383~2387

    Liu Ningning, Sun Jiaming, Pan Shaohua et al.. Nonlinear optical property of a-Si/SiO2 superlattice structure[J]. Chinese Science Bulletin, 2000, 45(22): 2383~2387

[20] 郭亨群, 林赏心, 王启明. 纳米Si镶嵌SiO2薄膜的发光与非线性光学特性的应用[J]. 半导体学报, 2006, 27(2): 345~349

    Guo Hengqun, Lin Shangxin, Wang Qiming. Photoluminescence and application of nonlinear optical property of nc-Si-SiO2 films[J]. Chinese J. Semiconductors, 2006, 27(2): 345~349

王加贤, 王燕飞. 半导体薄膜实现Nd:YVO4 1064 nm和1342 nm双波长激光被动调Q[J]. 中国激光, 2012, 39(2): 0202008. Wang Jiaxian, Wang Yanfei. Semiconductor Film Passively Q-Switching for Dual-Wavelength Lasers at 1064 nm and 1342 nm in Nd:YVO4 Laser[J]. Chinese Journal of Lasers, 2012, 39(2): 0202008.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!