Control of laser radiation parameters

Passive method of laser radiation smoothing using spectral dispersion

D. V. Sizmin, V. N. Pugacheva, K. V. Starodubtsev, L. A. Dushina, O. I. Gorchakov, V. N. Derkach, I. N. Voronich

Federal State Unitary Enterprise "Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod region

Abstract: A new version of the method for spatiotemporal smoothing of laser radiation using spectral dispersion is proposed, which does not require the use of high-frequency phase modulators, i.e. a method based on the use of a broadband master oscillator. An experimental study of this method has been conducted on the Luch laser facility.

Keywords: smoothing of laser radiation, spectral dispersion, uniformity of target irradiation, partially coherent radiation, speckles.

Received: 19.04.2021

 English version: Quantum Electronics, 2021, 51:8, 683–686

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