中国物理B ›› 2013, Vol. 22 ›› Issue (12): 124204-124204.doi: 10.1088/1674-1056/22/12/124204

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

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

常建华a, 孙青b, 葛益娴a, 王婷婷b, 陶在红a, 张闯a   

  1. a Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    b Optics Division, National Institute of Metrology, Beijing 100013, China
  • 收稿日期:2013-08-27 修回日期:2013-09-18 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11374161), the Open Research Project of Jiangsu Provincial Key Laboratory of Meteorological Observation and Information Processing, China (Grant No. KDXS1206), and the Project Funded by the Priority Academic Program Development of Jiangsu Provincial Higher Education Institutions, China.

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

Chang Jian-Hua (常建华)a, Sun Qing (孙青)b, Ge Yi-Xian (葛益娴)a, Wang Ting-Ting (王婷婷)b, Tao Zai-Hong (陶在红)a, Zhang Chuang (张闯)a   

  1. a Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    b Optics Division, National Institute of Metrology, Beijing 100013, China
  • Received:2013-08-27 Revised:2013-09-18 Online:2013-10-25 Published:2013-10-25
  • Contact: Chang Jian-Hua E-mail:jianhuachang@nuist.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11374161), the Open Research Project of Jiangsu Provincial Key Laboratory of Meteorological Observation and Information Processing, China (Grant No. KDXS1206), and the Project Funded by the Priority Academic Program Development of Jiangsu Provincial Higher Education Institutions, China.

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摘要： 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 ℃, respectively, based on the fiber laser fundamental lights.

关键词: mid-IR, difference frequency generation, quasi-phase matching, dual-wavelength

Abstract: 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 ℃, respectively, based on the fiber laser fundamental lights.

Key words: mid-IR, difference frequency generation, quasi-phase matching, dual-wavelength

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.60.-v (Laser optical systems: design and operation) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.72.Ai (Infrared sources)