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Temperature Controlled Filamentation in Argon Gas |
| CAO Shi-Ying1, KONG Wei-Peng2, SONG Zhen-Ming2, QIN Yu2, LI Ru-Xin3, WANG Qing-Yue2, ZHANG Zhi-Gang 1,2 |
| 1Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 1008712Ultrafast Laser Laboratory, School of Precision Instrument and Optoelectronics Engineering, Key Laboratory of Optoelectronic Information Technical Science, EMC, Tianjin University, Tianjin 3000723State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, PO Box 800-211, Shanghai 201800 |
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| Cite this article: |
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CAO Shi-Ying, KONG Wei-Peng, SONG Zhen-Ming et al 2008 Chin. Phys. Lett. 25 3689-3692 |
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Abstract Temperature controlled filamentation is experimentally demonstrated in a temperature gradient gas-filled tube. The proper position of the tube is heated by a furnace and two ends of the tube are cooled by air. The experimental results show that multiple filaments are shrunken into a single filament or no filament only by increasing the temperature at the beginning of the filament. This technique offers another degree of freedom of controlling the filamentation and opens a new way for intense monocycle pulse generation through gradient temperature in a noble gas.
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| Keywords:
42.65.Re
42.65.Jx
42.65.Sf
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Received: 20 July 2008
Published: 26 September 2008
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| PACS: |
42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.65.Jx
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(Beam trapping, self-focusing and defocusing; self-phase modulation)
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42.65.Sf
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(Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics)
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