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

• 来源期刊: 中国物理（英文版）
• 关键词: wave-guide array CO2 laser field distribution
• 年，卷（期）: 2007,（4）
• 页码范围: 1031-1037
• 页数: 7页
• 语种: 英文

摘要

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.