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When the highly-intensive and highly-directional white light from pulsed fiber laser is focused into water, many directional and colorful rings, coherent rainbows, are observed. The laser generates bubbles with similar sizes in the water, which serve as scatters. The intensive light leads to spatial self-phase modulation and thus generates the coherent rainbows. Such a phenomenon has been observed in many kinds of liquids.
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Keywords:
- rainbow /
- bubble /
- spatial self-phase modulation /
- coherent interference
[1] Li J M, Wei J Y, Wang X Q, Nan J Y, Yang F 2007 J. Henan Normal Univ. (Nat. Sci.) 35 98 (in Chinese) [李建民, 魏建宇, 王秀清, 南景宇, 杨富 2007 河南师范大学学报 (自然科学版) 35 98]
[2] Yu Z H, Weng Y X 2010 Sci. China: Phys. Mech. Astron. 53 1060
[3] Wu Y L, Wu Q, Sun F, Cheng C, Meng S, Zhao J M 2015 PNAS 112 11800
[4] Durbin S D, Arakelian S M, Shen Y R 1981 Opt. Lett. 6 411
[5] Wu R, Zhang Y L, Yan S C, Bian F, Wang WL, Bai X D, Lu X H, Zhao J M, Wang A G 2011 Nano Lett. 11 5159
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[1] Li J M, Wei J Y, Wang X Q, Nan J Y, Yang F 2007 J. Henan Normal Univ. (Nat. Sci.) 35 98 (in Chinese) [李建民, 魏建宇, 王秀清, 南景宇, 杨富 2007 河南师范大学学报 (自然科学版) 35 98]
[2] Yu Z H, Weng Y X 2010 Sci. China: Phys. Mech. Astron. 53 1060
[3] Wu Y L, Wu Q, Sun F, Cheng C, Meng S, Zhao J M 2015 PNAS 112 11800
[4] Durbin S D, Arakelian S M, Shen Y R 1981 Opt. Lett. 6 411
[5] Wu R, Zhang Y L, Yan S C, Bian F, Wang WL, Bai X D, Lu X H, Zhao J M, Wang A G 2011 Nano Lett. 11 5159
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