|Anomalous Variation of Beat Frequency in a Dual Frequency He-Ne Laser|
|Liu WeiXin; Sun MingZhe
|Source Publication||CHINESE PHYSICS LETTERS
|Abstract||The beat frequency in a dual frequency He-Ne laser varies while the resonant cavity length is tuned. As to the laser with two longitudinal modes, the variation amplitude is commonly less than 500 kHz, proven by experiments and theories. This study reveals an anomalous variation of the beat frequency when a piece of element is put into the cavity and is aligned with the laser axis. Consequently the variation amplitude could reach 22 MHz, several dozen times larger than that without the intra-cavity element. This cannot be explained only by laser mode pulling and pushing effects. Some influencing factors are investigated experimentally, including the tilted angle of the element and the distance between its surface and cavity mirror. The qualitative analysis is discussed, which agrees with the experimental results.|
|Funding Project||[State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University]
|First Author Affilication||National Astronomical Observatories, Chinese Academy of Sciences
Liu WeiXin,Sun MingZhe. Anomalous Variation of Beat Frequency in a Dual Frequency He-Ne Laser[J]. CHINESE PHYSICS LETTERS,2016,33(2).
Liu WeiXin,&Sun MingZhe.(2016).Anomalous Variation of Beat Frequency in a Dual Frequency He-Ne Laser.CHINESE PHYSICS LETTERS,33(2).
Liu WeiXin,et al."Anomalous Variation of Beat Frequency in a Dual Frequency He-Ne Laser".CHINESE PHYSICS LETTERS 33.2(2016).
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