Optimizing the cavity parameters and choosing the active medium of a solid-state laser that operates in the continuous and pulsed regimes with pumping by a single powerful diode

2009 ◽  
Vol 76 (11) ◽  
pp. 680
Author(s):  
V. V. Bezotosnyĭ ◽  
M. V. Gorbunkov ◽  
Yu. M. Popov ◽  
V. G. Tunkin ◽  
E. A. Cheshev ◽  
...  
1998 ◽  
Vol 16 (4) ◽  
pp. 605-625 ◽  
Author(s):  
G.F. Albrecht ◽  
S.B. Sutton ◽  
E.V. George ◽  
W.R. Sooy ◽  
W.F. Krupke

This paper describes a solid state laser concept that scales to MW levels of burst power and MJ of burst energy and burst durations measured in seconds. During lasing action, waste heat is purposely stored in the heat capacity of the active medium. The paper outlines the principal scaling laws of key operational features and arrives at a conceptual design example of the laser head as well as a mobile laser system.


1998 ◽  
Author(s):  
Nicolaie A. Pavel ◽  
Takunori Taira ◽  
Traian Dascalu ◽  
Voicu Lupei

2020 ◽  
Author(s):  
Xiaojing Xia ◽  
Anupum Pant ◽  
Xuezhe Zhou ◽  
Elena Dobretsova ◽  
Alex Bard ◽  
...  

Fluoride crystals, due to their low phonon energies, are attractive hosts of trivalent lanthanide ions for applications in upconverting phosphors, quantum information science, and solid-state laser refrigeration. In this article, we report the rapid, low-cost hydrothermal synthesis of potassium lutetium fluoride (KLF) microcrystals for applications in solid-state laser refrigeration. Four crystalline phases were synthesized, namely orthorhombic K<sub>2</sub>LuF<sub>5</sub> (Pnma), trigonal KLuF<sub>4</sub> (P3<sub>1</sub>21), orthorhombic KLu<sub>2</sub>F<sub>7</sub> (Pna2<sub>1</sub>), and cubic KLu<sub>3</sub>F<sub>10</sub> (Fm3m), with each phase exhibiting unique microcrystalline morphologies. Luminescence spectra and emission lifetimes of the four crystalline phases were characterized based on the point-group symmetry of trivalent cations. Laser refrigeration was measured by observing both the optomechanical eigenfrequencies of microcrystals on cantilevers in vacuum, and also the Brownian dynamics of optically trapped microcrystals in water. Among all four crystalline phases, the most significant cooling was observed for 10%Yb:KLuF<sub>4</sub> with cooling of 8.6 $\pm$ 2.1 K below room temperature. Reduced heating was observed with 10%Yb:K<sub>2</sub>LuF<sub>5</sub>


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