Akimov, V.I., Voronov, A.A., Kozlovsky, V.I., Korostelin, Yu.V., Landman, A.I., Podmar’kov, Yu.P. and Frolov, M.P. (2006) Efficient Lasing in Fe2+:ZnSe Crystal at Room Temperature. Quantum Electronics, 36, 299-301.
http://dx.doi.org/10.1070/QE2006v036n04ABEH013139

has been cited by the following article:

• TITLE: Nonlinear Change in Refractive Index and Transmission Coefficient of ZnSe:Fe2+ at Long-Pulse 2.94-μm Excitation

  AUTHORS: Alexander V. Kir’yanov, Nikolai N. Il’ichev, Elmira S. Gulyamova, Alexander S. Nasibov, Peter V. Shapkin

  KEYWORDS: Nonlinear Refractive index, Nonlinear Transmission, Z-Scan Technique, Thermal lens, ZnSe:Fe2+

  JOURNAL NAME: Optics and Photonics Journal, Vol.5 No.1, January 20, 2015

  ABSTRACT: An experimental study of the nonlinear changes in refractive index and transmission coefficient of single-crystal ZnSe:Fe2+, fabricated through the Fe-diffusion method, at long-pulse (~300 ns), sub-mJ, 2.94-mm Z-scan probing is reported. As well, a theoretical model based on the generalized Avizonis-Grotbeck equations is developed and applied for straightforward fitting of the open- and closed-aperture Z-scans, obtained for ZnSe:Fe2+ with different Fe2+ centers concentrations. The modeling results reveal that the contributions in the absorption and refractive index nonlinearities of ZnSe:Fe2+ are “common” resonant-absorption saturation (the minor part) and pulse-induced heating of the samples (the major part), which are strongly dependent on Fe2+ concentrations. Large values of the index change (>~10-3) and partial resonant-absorption bleaching (limited by ~50%), both produced via the thermal effect mainly, are the features of the ZnSe:Fe2+ samples inherent to this type of excitation.