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Kvantovaya Elektronika, 2012, Volume 42, Number 7, Pages 595–599 (Mi qe14846)  

Interaction of laser radiation with matter. Laser plasmas

Interband two-photon absorption in strontium barium niobate crystals

P. G. Zverev, L. I. Ivleva, A. Ya. Karasik, V. I. Lukanin, D. S. Chunaev

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: Interband two-photon absorption in photorefractive strontium — barium niobate crystals SrxBa1-xNb2O6 (x = 0.61, 0.75), both pure and doped with Ni and La ions, is studied under excitation by trains of 523.5-nm picosecond laser pulses. The two-photon absorption coefficients are found to vary from 0.17 to 0.31 cm GW-1 depending on the azimuth of the linear polarisation of the pump radiation and on the chemical composition of samples. The dependences of the transmission of crystals on the pump radiation intensity show a hysteresis related to induced one-photon absorption from excited levels.

Keywords: strontium barium niobate crystals, two-photon absorption, interband absorption, photorefractive crystal.

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English version:
Quantum Electronics, 2012, 42:7, 595–599

Bibliographic databases:

PACS: 33.80.Wr, 42.70.Mp, 42.70.Nq
Received: 06.03.2012
Revised: 25.04.2012

Citation: P. G. Zverev, L. I. Ivleva, A. Ya. Karasik, V. I. Lukanin, D. S. Chunaev, “Interband two-photon absorption in strontium barium niobate crystals”, Kvantovaya Elektronika, 42:7 (2012), 595–599 [Quantum Electron., 42:7 (2012), 595–599]

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  • Квантовая электроника Quantum Electronics
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