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.
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.
WANG Sheng;YANG Su-Hui;WU Xia;ZHAO Chang-Ming;ZHU Qi-Hai. Experimental Study on Influence of Atmospheric Turbulence on Coherence of Dual-Frequency Laser[J]. 中国物理快报, 2010, 27(8): 84202-084202.
WANG Sheng, YANG Su-Hui, WU Xia, ZHAO Chang-Ming, ZHU Qi-Hai. Experimental Study on Influence of Atmospheric Turbulence on Coherence of Dual-Frequency Laser. Chin. Phys. Lett., 2010, 27(8): 84202-084202.
[1] Wu F 2005 Chin. Phys. Lett. 22 2604 [2] Chu X X, Liu Z J and Wu Y 2008 Chin. Phys. Lett. 25 485 [3] Gordienko V M, Koryabin A V, Kravtsov N V and Firsov V V 2008 Laser Phys. Lett. 5 390 [4] Jelalian A V 1992 Laser Radar Systems (Boston: Artech House) [5] Scholle K, Heumann E and Huber G 2004 Laser Phys. Lett. 1 285 [6] Morvan L, Lai N D, Dolfi D, Huignard J P, Brunel M, Bretenaker F and LeFloch A 2002 Appl. Opt. 41 5702 [7] Tan Y D and Zhang S L 2007 Chin. Phys. Lett. 24 2590 [8] Jin Y Y, Zhang S L, Li Y, Guo J H and Li J Q 2001 Chin. Phys. Lett. 18 533 [9] Pillet G, Morvan L, Brunel M, Bretenaker F, Daniel D, Vallet M and Huignard J P 2008 J. Lightwave Technol. 26 2764 [10] Brunel M, Amon A and Vallet M 2008 Opt. Lett. 30 2418 [11] Pillet G, Morvan L, Dolfi D and Huignard J P 2008 Conference on Electro-optical Remote Sensing, Photonic Technologies, and Applications (Cardiff, Wales, United Kingdom 15-16 September 2008) p 71140E [12] Pillet G, Morvan L, Dolfi D and Huignard J P 2009 Conference on Laser Radar Technology and Applications XIV (Orland, FL, USA 15 April 2009) p 73230Z [13] Qian X M, Zhu W Y, Wang A T, Gu C and Rao R Z 2010 Chin. Phys. Lett. 27 044214 [14] Shu J H, Chen Z Y and Pu J X 2010 Chin. Phys. Lett. 26 024207 [15] Wu K Y, Wei G H and Zhao C M 2000 Acta Opt. Sin. 20 1245 (in Chinese)
2010, Vol. 27 
