| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Experimental Study on Influence of Atmospheric Turbulence on Coherence of Dual-Frequency Laser |
WANG Sheng, YANG Su-Hui, WU Xia, ZHAO Chang-Ming, ZHU Qi-Hai |
| Department of Optoelectronics, Beijing Institute of Technology, Beijing 100081 |
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| Cite this article: |
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WANG Sheng, YANG Su-Hui, WU Xia et al 2010 Chin. Phys. Lett. 27 084202 |
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Abstract The influence of atmospheric turbulence on the coherence of a dual-frequency laser beam is studied experimentally. An atmospheric turbulence simulator is inserted in one arm of a Mach-Zehnder interferometer. A single frequency laser beam and a dual-frequency laser beam with a frequency difference of 100 MHz travel through the interferometer, respectively. The visibilities of the interference fringes of the single and dual-frequency laser beams under different turbulent forces are compared. When the turbulence becomes stronger, the visibilities of the interference pattern of the single frequency interferometer decrease more rapidly. This shows that the atmospheric turbulence has less influence on the coherence of the dual-frequency laser beam. The linewidths broadened by the turbulence are calculated with the Wiener-Khintchine theory.
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| Keywords:
42.60.By
42.68.Bz
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Received: 24 December 2009
Published: 28 July 2010
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| PACS: |
42.60.By
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(Design of specific laser systems)
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42.68.Bz
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(Atmospheric turbulence effects)
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