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JOURNAL OF SYNTHETIC CRYSTALS ›› 2022, Vol. 51 ›› Issue (11): 1845-1850.

• Research Articles • Previous Articles     Next Articles

Preparation and Laser Output Properties of Fe2+∶ZnSe Laser Crystals by Double Temperature Zone Thermal Diffusion Doping

XIA Shixing1,2, ZHOU Long1,2, XU Cong1,2, WEI Lei3, DING Yu4, ZHANG Fengfa1,2   

  1. 1. Heilongjiang Institute of Technology, Harbin 150001, China;
    2. Heilongjiang Provincial Key Laboratory of Optoelectronics and Laser Technology, Harbin 150001, China;
    3. Science and Technology on Solid-State Laser Laboratory, Beijing 100015, China;
    4. Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin 300308, China
  • Received:2022-06-08 Online:2022-11-15 Published:2022-12-07

Abstract: In this paper, Fe2+∶ZnSe laser crystal with a size of Ø22 mm×4 mm was obtained by double temperature zone thermal diffusion doping method using CVD ZnSe wafer as the host material and FeSe powder as the dopant. SIMS show that iron ion concentration on the surface of the crystal sample is 3.43×1018 cm-3, and the valence state of iron in the crystal sample was analyzed by XPS. The transmission spectra of Fe2+∶ZnSe laser crystals were tested by UV/Vis/NIR spectrophotometer and Fourier transform infrared spectrometer, presenting that there is an obvious Fe2+ absorption peak at 3.0 μm with the peak transmittance of 5.5%. Fe2+∶ZnSe crystal with a size of 10 mm×10 mm×4 mm was pumped by Cr,Er∶YAG laser with a wavelength of 2.93 μm at 77 K, obtaining a mid-infrared laser output of 191 mJ and a center wavelength of 4.04 μm with the light-to-light conversion efficiency of 13.84%.

Key words: Fe2+∶ZnSe laser crystal, thermal diffusion doping, mid-infrared, transmittance, laser output, light-to-light conversion efficiency

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