Feasibility of supersonic diode pumped alkali lasers: Model calculations

The feasibility of supersonic operation of diode pumped alkali lasers (DPALs) is studied for Cs and K atoms applying model calculations, based on a semi-analytical model previously used for studying static and subsonic flow DPALs. The operation of supersonic lasers is compared with that measured and modeled in subsonic lasers. The maximum power of supersonic Cs and K lasers is found to be higher than that of subsonic lasers with the same resonator and alkali density at the laser inlet by 25% and 70%, respectively. These results indicate that for scaling-up the power of DPALs, supersonic expansion should be considered.

[1]  Wolfgang Rudolph,et al.  Experimental and numerical modeling studies of a pulsed rubidium optically pumped alkali metal vapor laser , 2011 .

[2]  M. K. Shaffer,et al.  Photoionization in alkali lasers. , 2011, Optics express.

[3]  A. Shapiro.  The dynamics and thermodynamics of compressible fluid flow. , 1953 .

[4]  Alan Gallagher.  Rubidium and Cesium Excitation Transfer in Nearly Adiabatic Collisions with Inert Gases , 1968 .

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

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

[7]  Milosevic,et al.  Energy-pooling collisions in cesium: 6PJ+6PJ-->6S+(nl=7P,6D,8S,4F). , 1996, Physical review. A, Atomic, molecular, and optical physics.

[8]  Gordon D. Hager,et al.  High efficiency hydrocarbon-free resonance transition potassium laser , 2009 .

[9]  B. Barmashenko,et al.  Modeling of flowing gas diode pumped alkali lasers: dependence of the operation on the gas velocity and on the nature of the buffer gas. , 2012, Optics letters.

[10]  V. A. Eroshenko,et al.  Diode-pumped caesium vapour laser with closed-cycle laser-active medium circulation , 2012 .

[11]  T. Kraska,et al.  Argon nucleation: bringing together theory, simulations, and experiment. , 2008, The Journal of chemical physics.

[12]  J. Ciurył,et al.  42P12↔42P32 mixing in potassium induced in collisions with noble gas atoms , 1982 .

[13]  Xiaojun Xu,et al.  Modeling, numerical approach, and power scaling of alkali vapor lasers in side-pumped configuration with flowing medium , 2011 .

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

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

[16]  M. Perrin,et al.  Energy dependence of the total cross sections for K(42Pj1m1 to 42Pj2m2)+He collisions , 1980 .

[17]  G. Perram,et al.  A three-level analytic model for alkali metal vapor lasers: part I. Narrowband optical pumping , 2010 .

[18]  Qi Zhu,et al.  Analysis of temperature distributions in diode-pumped alkali vapor lasers , 2010 .

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