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在改变一个频率分裂短腔(150mm)He-Ne激光器(波长0.6328μm)的谐振腔长的过程中,我们分别测量了偏振方向互相垂直的两分裂模(o模和e模)的光功率。两模功率在腔调谐过程中呈反向变化。我们看到一个模的运行在特定区间内由于模竞争被另一个模所抑制,抑制宽度可达几百兆赫兹,而且随着两模的频差大小而改变。此外我们还研究了两模共存区间的宽度和频差的关系
In changing the resonant cavity length of a frequency split short cavity (150mm) He-Ne laser (wavelength 0.6328μm), we measured the optical powers of two modes (o mode and e mode) perpendicular to each other in the polarization direction. Two-mode power changes inversely during cavity tuning. We see that the mode of operation of a mode in a particular interval because the mode competition is suppressed by another mode, the suppression width up to hundreds of megahertz, and with the size of the two modes vary. In addition, we also study the relationship between width and frequency difference of two-mode coexistence interval