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Laser performance and thermal lensing in flashlamp pumped N p-cut and N g-cut Nd:KGW crystals

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Abstract

A comparative experimental study of laser performance and thermal lensing properties in a flashlamp pumped Nd:KGW crystal cut for the light propagating along the optical indicatrix axes N p and N g is presented. It was found that for both, the N p-cut Nd:KGW and N g-cut Nd:KGW thermal lens is astigmatic with astigmatism degree being determined mainly by the thermal expansion anisotropy in KGW. The thermal lens in the N g-cut Nd:KGW is positive, while in the N p-cut Nd:KGW it has different signs for rays lying in two different meridional planes. The sensitivity factors show how much the thermal lens optical power of a laser rod changes with pump power are determined. The results show that the N g-cut Nd:KGW allows one to obtain higher average output powers at high pump levels as compared to the N p-cut Nd:KGW.

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Authors and Affiliations

  1. Institute for Optical Materials and Technologies, Belorussian National Technical University, 65 Nezavisimosti Ave., bldg. 17, Minsk, 220013, Belarus

    P. A. Loiko, I. A. Denisov, K. V. Yumashev & N. V. Kuleshov

  2. Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3 Lavrentyev Ave., Novosibirsk, 630090, Russia

    A. A. Pavlyuk

Authors
  1. P. A. Loiko
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  2. I. A. Denisov
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  3. K. V. Yumashev
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  4. N. V. Kuleshov
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  5. A. A. Pavlyuk
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Correspondence to K. V. Yumashev.

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Loiko, P.A., Denisov, I.A., Yumashev, K.V. et al. Laser performance and thermal lensing in flashlamp pumped N p-cut and N g-cut Nd:KGW crystals. Appl. Phys. B 100, 477–483 (2010). https://doi.org/10.1007/s00340-010-3968-z

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  • DOI: https://doi.org/10.1007/s00340-010-3968-z

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