中国物理B ›› 2008, Vol. 17 ›› Issue (9): 3367-3371.doi: 10.1088/1674-1056/17/9/037

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Study on the optical limiting properties of the mixed liquid of carbon black suspensions and green tea solution by multi-pulse laser

杨海林1, 张鹏1, 沈学举1, 姜楠1, 陈燕1, 唐芳1, 牛燕雄2   

  1. (1)Department of Optics & Electrical Engineering, Ordnance Engineering College, Shijiazhuang 050003, China; (2)Department of Optics & Electrical Engineering, Ordnance Engineering College, Shijiazhuang 050003, China;Tsinghua University, Key Laboratory of Precision Instrument and Testing Technology of Nation, Beijing 100084, China
  • 收稿日期:2007-12-22 修回日期:2008-04-25 出版日期:2008-09-08 发布日期:2008-09-08
  • 基金资助:
    Project supported by the National Science Foundation for Post-doctoral Scientists of China (Grant No 20060400418), and the Key Scientific Research Foundation of the Ordnance Engineering College, China (Grant No YJJXM05002).

Study on the optical limiting properties of the mixed liquid of carbon black suspensions and green tea solution by multi-pulse laser

Niu Yan-Xiong(牛燕雄)a)b)†, Yang Hai-Lin(杨海林)a), Zhang Peng(张鹏)a), Shen Xue-Ju(沈学举)a), Jiang Nan(姜楠)a), Chen Yan(陈燕)a), and Tang Fang(唐芳)a)   

  1. a Department of Optics & Electrical Engineering, Ordnance Engineering College, Shijiazhuang 050003, China; b Tsinghua University, Key Laboratory of Precision Instrument and Testing Technology of Nation, Beijing 100084, China
  • Received:2007-12-22 Revised:2008-04-25 Online:2008-09-08 Published:2008-09-08
  • Supported by:
    Project supported by the National Science Foundation for Post-doctoral Scientists of China (Grant No 20060400418), and the Key Scientific Research Foundation of the Ordnance Engineering College, China (Grant No YJJXM05002).

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摘要： The optical limiting properties of the mixed liquid of carbon black suspensions (CBS) and green tea solution were studied by using an 8 ns laser pulse at 532\,nm. The optical limiting effects of the CBS and mixed liquid have been compared between 5 and 10\,Hz repetition frequencies with nanosecond laser pulse. The experimental results indicate that the optical limiting threshold of the sample with the incidence laser at 10\,Hz repetition frequency is lower than at 5\,Hz repetition frequency. The possible reasons for the influence of the repetition frequency on the samples are discussed. And by observing the optical radiant distributions when the laser pulse passing through different samples, a possible mechanism for the observed effects is suggested. At the same time, the result shows that the optical limiting of CBS is the dominant factor to optical limiting of the mixed liquid.

关键词: optical limiting, carbon black suspension, radiation protection

Abstract: The optical limiting properties of the mixed liquid of carbon black suspensions (CBS) and green tea solution were studied by using an 8 ns laser pulse at 532 nm. The optical limiting effects of the CBS and mixed liquid have been compared between 5 and 10 Hz repetition frequencies with nanosecond laser pulse. The experimental results indicate that the optical limiting threshold of the sample with the incidence laser at 10 Hz repetition frequency is lower than at 5 Hz repetition frequency. The possible reasons for the influence of the repetition frequency on the samples are discussed. And by observing the optical radiant distributions when the laser pulse passing through different samples, a possible mechanism for the observed effects is suggested. At the same time, the result shows that the optical limiting of CBS is the dominant factor to optical limiting of the mixed liquid.

Key words: optical limiting, carbon black suspension, radiation protection

中图分类号:  (Ultrafast processes; optical pulse generation and pulse compression)

  • 42.65.Re
42.50.Md (Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency) 42.65.Jx (Beam trapping, self-focusing and defocusing; self-phase modulation) 42.70.-a (Optical materials) 78.67.Ch (Nanotubes) 82.70.Kj (Emulsions and suspensions)