Influence of excitation on physical features of a diode-pumped alkali laser

In recent years, a diode-pumped alkali laser (DPAL) has become one of the most hopeful candidates to achieve the high power performance. A series of models have been established to analyze the DPAL’s kinetic process and most of them were based on the algorithms in which only the ideal 3-level system was considered. In this paper, we developed a systematic model by taking into account the influence of excitation of neutral alkali atoms to higher levels on the physical features of a static DPAL. The procedures of heat transfer and laser kinetics were combined together in our theoretical model. By using such a theme, the continuous temperature distribution has been evaluated in the transverse section of a cesium vapor cell. The calculated results indicate that the excitation plays an important role during the lasing process, which might deepen the understanding of the kinetic mechanism of a DPAL.

[1]  Boris D. Barmashenko,et al.  Detailed analysis of kinetic and fluid dynamic processes in diode-pumped alkali lasers , 2013 .

[2]  V Keith Kanz,et al.  Resonance transition 795-nm rubidium laser. , 2003, Optics letters.

[3]  Ralph H Page,et al.  Multimode-diode-pumped gas (alkali-vapor) laser. , 2006, Optics letters.

[4]  Hirofumi Miyajima,et al.  Approaches of output improvement for a cesium vapor laser pumped by a volume-Bragg-grating coupled laser-diode-array , 2007 .

[5]  William F. Krupke,et al.  Diode pumped alkali lasers (DPALs)—A review (rev1) , 2012 .

[6]  Xiaojun Xu,et al.  Study on photoionization in a rubidium diode-pumped alkali laser gain medium with the optogalvanic method. , 2013, Optics letters.

[7]  R. Knize,et al.  Diode-pumped 10 W continuous wave cesium laser. , 2007, Optics letters.

[8]  V. K. Kanz,et al.  End-pumped continuous-wave alkali vapor lasers: experiment, model, and power scaling , 2004 .

[9]  Boris V. Zhdanov,et al.  Review of alkali laser research and development , 2012 .

[10]  Wei Zhang,et al.  Investigation of physical features of both static and flowing-gas diode-pumped rubidium vapor lasers , 2014, Photonics Asia.

[11]  Wei Zhang,et al.  Investigation of thermal features of two types of alkali-vapor cells pumped by a laser diode , 2014 .

[12]  B. Barmashenko,et al.  Static diode pumped alkali lasers: Model calculations of the effects of heating, ionization, high electronic excitation and chemical reactions , 2013 .

[13]  G Boyadjian,et al.  Laser diode array pumped continuous wave Rubidium vapor laser. , 2008, Optics express.

[14]  Wei Zhang,et al.  Algorithm for evaluation of temperature distribution of a vapor cell in a diode-pumped alkali laser system: part I. , 2014, Optics express.