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Chinese Physics, 2007, Vol. 16(4): 1031-1037    DOI: 10.1088/1009-1963/16/4/028
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Analysis of the far spatial coherent suppressed single peak field distribution of a rectangular wave-guide laser

Wu Xing-Fei(吴行飞), Yang Jing(杨静), and Xin Jian-Guo(辛建国)
Department of Optical Engineering, Beijing Institute of Technology, Beijing 100081, China
Abstract  A theory of the far spatial coherent-suppressed single-peak field distribution of a rectangular wave-guide CO2 laser is presented. The theoretical analysis shows that a rectangular wave-guide laser can have an output intensity distribution in far field similar to that produced from a wave-guide array laser, which is in agreement with the experimental result. A single-peak mode output is obtained within 5 metres. The experimental far-field spread angle in the bigger-Fresnel number direction is 0.63 mrad, compared to the calculated one, 0.6 mrad, and when the length of the laser resonator is changed, a double-peak or multi-peak in far-field distribution of the laser is obtained.
Keywords:  wave-guide array      CO2 laser      field distribution  
Received:  09 June 2006      Revised:  27 October 2006      Accepted manuscript online: 
PACS:  42.55.Lt (Gas lasers including excimer and metal-vapor lasers)  
  42.60.By (Design of specific laser systems)  
  42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)  
  42.82.Et (Waveguides, couplers, and arrays)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  

Cite this article: 

Wu Xing-Fei(吴行飞), Yang Jing(杨静), and Xin Jian-Guo(辛建国) Analysis of the far spatial coherent suppressed single peak field distribution of a rectangular wave-guide laser 2007 Chinese Physics 16 1031

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