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Chin. Phys. B, 2008, Vol. 17(2): 644-648    DOI: 10.1088/1674-1056/17/2/047
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

Intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level

Cui Liu(崔柳), Zhang Shu-Lian(张书练), and Wan Xin-Jun(万新军)
The State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
Abstract  This paper demonstrates the intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level generated by the variable reflectivity of external reflector. The modulation depths of the orthogonally polarized frequencies are increased when the optical feedback level becomes strong. It also observes that the modulation amplitudes are different for different external cavity length. Based on the vectorial extension of Lamb's semi-classical theory, it finds that the calculations are consistent with the experimental results.
Keywords:  intensity modulation      optical feedback      frequency split  
Received:  01 February 2007      Revised:  04 May 2007      Accepted manuscript online: 
PACS:  42.60.Fc (Modulation, tuning, and mode locking)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
  42.55.Lt (Gas lasers including excimer and metal-vapor lasers)  
Fund: Project supported by the State Key Program of National Natural Science of China (Grant No 60438010).

Cite this article: 

Cui Liu(崔柳), Zhang Shu-Lian(张书练), and Wan Xin-Jun(万新军) Intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level 2008 Chin. Phys. B 17 644

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