Photonics

Photodissociation iodine laser with controllable beam pattern and 10 J output energy

G. N. Kachalin^ab, A. D. Malakhov^ab, E. A. Salatov^ab, O. L. Techko<sup>ab

a</sup> Federal State Unitary Enterprise "Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod region
^b Sarov branch of the Lomonosov Moscow State University

Abstract: A high-power photodissociation iodine laser with a controllable radiation pattern operating in the free generation mode has been developed. In its design, a coupled resonator and a space-time light modulation device (STMD) based on electro-optical ceramics of CTSL composition were used. The laser generation energy was 9.1 $\pm$ 0.7 J at a pulse duration of 175 $\mu$s and radiation divergence of 5 $\cdot$ 10$^{-4}$ rad. The intracavity PVMS was shown to withstand radiation loads of 6.8 $\cdot$ 10$^6$ W/cm$^2$.

Keywords: iodine photodissociation laser, spatio-temporal radiation modulator, electro-optical CTSL ceramics, coupled resonator, spatial contrast of radiation, radiation strength of CTSL ceramics.

Received: 06.08.2024
Revised: 12.05.2025
Accepted: 12.05.2025

DOI: 10.61011/JTF.2025.08.60905.250-24

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