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Generation regimes of a pulsed Nd:YAG laser with transverse LED pumping and multiloop self-pumped phase-conjugate cavity

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Abstract

The generation regimes in a pulsed Nd:YAG laser with transverse LED pumping and multiloop self-pumped phase-conjugate cavity on the gain gratings are studied. The differential efficiency of laser is 27% in the free-running regime at a pulse energy of up to 1 J and quality parameter M 2 of no greater than 1.5. The pulse energy under passive Q-switching is no less than 60% of the pulse energy in the free-running regime at the same beam quality. The generation of the narrow-band radiation is demonstrated. A generation band of no greater than 1.2 GHz corresponds to the primary single-frequency high-power laser pulse in the free-running mode under conditions for self-Q-switching on the gain gratings. When additional elements (F −2 :LiF and Cr4+:YAG crystals) are introduced in the optical scheme of the phase-conjugate cavity, similar narrowband single-mode generation is observed in the passive Q-switching regime as a pulse train or monopulse. The laser pulse power is up to 2 MW at a pulse duration of 20 ns.

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Authors and Affiliations

  1. Ustinov Baltic State Technical University Voenmekh, ul. Pervaya Krasnoarmeiskaya 1, St. Petersburg, 190005, Russia

    V. F. Lebedev, A. P. Pogoda & A. S. Boreisho

  2. Research and Development Company Laser Systems, St. Petersburg, 190005, Russia

    V. F. Lebedev, A. P. Pogoda & A. S. Boreisho

  3. Kovrov State Technological Academy, ul. Mayakovskogo 19, Kovrov, Vladimir oblast, 601910, Russia

    S. N. Smetanin & A. V. Fedin

Authors
  1. V. F. Lebedev
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  2. A. P. Pogoda
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  3. S. N. Smetanin
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  4. A. S. Boreisho
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  5. A. V. Fedin
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Correspondence to V. F. Lebedev.

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Original Russian Text © V.F. Lebedev, A.P. Pogoda, S.N. Smetanin, A.S. Boreisho, A.V. Fedin, 2014, published in Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 84, No. 12, pp. 107–111.

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Lebedev, V.F., Pogoda, A.P., Smetanin, S.N. et al. Generation regimes of a pulsed Nd:YAG laser with transverse LED pumping and multiloop self-pumped phase-conjugate cavity. Tech. Phys. 59, 1844–1848 (2014). https://doi.org/10.1134/S1063784214120159

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  • DOI: https://doi.org/10.1134/S1063784214120159

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