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Modern nonlinear optics
Phase combining of radiation from a two-channel explosively pumped photodissociation iodine laser with an SBS mirror
S. G. Garanin, Yu. V. Dolgopolov, G. N. Kachalin, A. V. Kopalkin, S. M. Kulikov, S. N. Pevnyi, F. A. Starikov, S. A. Sukharev Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics (RFNC — VNIIEF)", Sarov, Nizhny Novgorod region
Abstract:
A two-channel double-pass iodine explosively pumped photodissociation laser (EPPL) with an explosively pumped master oscillator (MO) and an SBS mirror is studied. The radiation source, determined by an aperture 6 mm in diameter, through which the radiation from MO enters the turbulent surface air path, is located at a distance of 2.5 km from the amplifier unit input. An SBS mirror with a kinoform raster of microlenses is used to compensate for the amplifier and path optical inhomogeneities and to match the phases in the EPPL channels. The energy and spatial
characteristics of the EPPL output radiation are studied experimentally and numerically. Good agreement is obtained between the experimental and calculated distribution of the energy density of the output EPPL radiation in the plane of the MO aperture, which is a pattern of interference between the two channels. The maximum energy density in the aperture plane is by more than 4 times greater than in the case of a single-channel EPPL.
Keywords:
explosively pumped photodissociation iodine laser, stimulated Brillouin scattering, phase conjugation.
Received: 14.12.2021 Revised: 11.01.2022 Accepted: 11.01.2022
Citation:
S. G. Garanin, Yu. V. Dolgopolov, G. N. Kachalin, A. V. Kopalkin, S. M. Kulikov, S. N. Pevnyi, F. A. Starikov, S. A. Sukharev, “Phase combining of radiation from a two-channel explosively pumped photodissociation iodine laser with an SBS mirror”, Kvantovaya Elektronika, 52:3 (2022), 289–295 [Quantum Electron., 52:3 (2022), 289–295]
Linking options:
https://www.mathnet.ru/eng/qe17997 https://www.mathnet.ru/eng/qe/v52/i3/p289
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Abstract page: | 100 | Full-text PDF : | 6 | References: | 19 | First page: | 15 |
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