Abstract

After finding some unbelievable laser radiation emitted from a cesium cell end-pumped by a narrow-linewidth laser diode (LD) without any additional oscillator mirrors, we established a kinetic model to theoretically investigate the lasing oscillation inside an alkali vapor cell. Then, we demonstrated that some pernicious oscillation could be generated by three possible oscillators formed by our alkali vapor cell. Afterward, we built the system mentioned above to experimentally evaluate this undesired lasing oscillation. We also compared the theoretical results with experimental ones of output laser power from both sides of the Cs cell changing with cell temperature. It has been found that the experimental output power from the pump side of the Cs cell was basically greater than the theoretical result. The conclusions could be helpful for the structural design in a high-powered alkali vapor laser system in the near future.

© 2018 Optical Society of America

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