Enhancing the blue shift of SHG signal in GaSe:B/Ce crystal

KARATAY A., YÜKSEK M., Ertap H., ELMALI A., KARABULUT M.

OPTICS AND LASER TECHNOLOGY, cilt.99, ss.392-395, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 99
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.optlastec.2017.09.027
  • Dergi Adı: OPTICS AND LASER TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.392-395
  • Anahtar Kelimeler: SHG, Nonlinear absorption, Carrier dynamics, GaSe, Boron, Cerium, 2-PHOTON ABSORPTION, OPTICAL-PROPERTIES, GALLIUM SELENIDE, ELECTRICAL-PROPERTIES, NONLINEAR ABSORPTION, SINGLE-CRYSTALS, SEMICONDUCTORS, GENERATION, ANISOTROPY, GROWTH
  • Ankara Üniversitesi Adresli: Evet

Özet

The influence of Ce3+ on the wavelength of second harmonic generation (SHG) signal in boron doped GaSe crystals have been investigated. We found that by substitution of Ce3+ with B3+, SHG signal shifted to lower wavelength. In addition, the nonlinear absorption (NA) properties and ultrafast dynamics of pure, 1 at.% B3+ and 0.5 at.% B3++ 0.5 at.% Ce3+ doped GaSe crystals have been studied by open aperture Z-scan and ultrafast pump probe spectroscopy techniques. From the open aperture Z-scan experiments we observed that all of the crystals showed nonlinear absorption (NA). However, pump-probe experiments revealed that when GaSe crystal is doped, the NA signal turns into a bleaching signal with different lifetimes depending on the type and concentration of the dopant atoms. (C) 2017 Elsevier Ltd. All rights reserved.