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Kvantovaya Elektronika, 2017, Volume 47, Number 7, Pages 620–626 (Mi qe16640)  

Active elements

Gain distribution in the volume of a solid-state active element of a diode-pumped high-power laser

T. I. Gushchika*, A. E. Drakina, N. V. D'yachkova, V. V. Romanovb

a P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
b Federal State Unitary Enterprise "Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod region

Abstract: We propose a technique for calculating the spatial gain profile in the volume of a solid active element of a high-energy laser pumped by laser diode arrays, which takes into account the properties of the radiation pattern of semiconductor lasers. This technique is employed to calculate the profile of the gain in a neodymium glass active element. By the example of a rod of rectangular section 4.5 by 4.5 by 25 cm we show that, by varying the pump system parameters, it is possible to define the profile of the gain: for instance, a profile uniform over the cross section (with its nonuniformity under 2.5%), with a peak at the centre or in peripheral regions, with a specific energy deposition of ~1 J cm-3.

Keywords: solid-state laser active element, diode pumping, control of gain profile.
* Author to whom correspondence should be addressed

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English version:
Quantum Electronics, 2017, 47:7, 620–626

Bibliographic databases:

Received: 23.03.2017
Revised: 19.05.2017

Citation: T. I. Gushchik, A. E. Drakin, N. V. D'yachkov, V. V. Romanov, “Gain distribution in the volume of a solid-state active element of a diode-pumped high-power laser”, Kvantovaya Elektronika, 47:7 (2017), 620–626 [Quantum Electron., 47:7 (2017), 620–626]

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  • Квантовая электроника Quantum Electronics
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