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Time-resolved measurement of thermally induced aberrations in a cryogenically cooled Yb:YAG slab with a wavefront sensor

  1. 1.
    0466507 - FZÚ 2017 RIV DE eng J - Článek v odborném periodiku
    Sikocinski, Pawel - Novák, Ondřej - Smrž, Martin - Pilař, Jan - Jambunathan, Venkatesan - Jelínková, H. - Endo, Akira - Lucianetti, Antonio - Mocek, Tomáš
    Time-resolved measurement of thermally induced aberrations in a cryogenically cooled Yb:YAG slab with a wavefront sensor.
    Applied Physics B-Lasers and Optics. Roč. 122, č. 4 (2016), 1-10, č. článku 73. ISSN 0946-2171
    Grant CEP: GA MŠk ED2.1.00/01.0027; GA MŠk EE2.3.20.0143; GA MŠk LO1602; GA ČR GA14-01660S
    Grant ostatní:HILASE(XE) CZ.1.05/2.1.00/01.0027; OP VK 6(XE) CZ.1.07/2.3.00/20.0143
    Institucionální podpora: RVO:68378271
    Klíčová slova: solid-state laser * Yb-Yag
    Kód oboru RIV: BH - Optika, masery a lasery
    Impakt faktor: 1.696, rok: 2016

    The time-resolved measurements of thermally induced wavefront aberrations in a cryogenically cooled Yb:YAG crystal are presented in dependence on temperature in the range between 250 and 130 K under non-lasing condition. A wavefront sensor was utilized to determine the wavefront aberrations. The wavefront distortions were experimentally studied for a cryogenically cooled Yb: YAG crystal in detail for the first time. The wavefront aberrations were significantly reduced at cryogenic temperatures including defocus which was the dominant aberration and which was responsible for the so-called thermal lensing effect. We found that defocus aberration is caused not only by thermally induced effects (responsible for thermal lens), but also by electronically induced change in the refractive index due to excitation of ion activators which is responsible for the electronic lensing.
    Trvalý link: http://hdl.handle.net/11104/0264788
     
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