Frequency conversion, nonlinear absorption and carrier dynamics of GaSe:B/Er crystals
OPTICAL MATERIALS, cilt.66, ss.137-141, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 66
- Basım Tarihi: 2017
- Doi Numarası: 10.1016/j.optmat.2017.02.007
- Dergi Adı: OPTICAL MATERIALS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.137-141
- Anahtar Kelimeler: Frequency conversion, Nonlinear absorption, Carrier dynamics, GaSe, Erbium, Boron, 2-PHOTON ABSORPTION, OPTICAL-PROPERTIES, GALLIUM SELENIDE, SHG, SEMICONDUCTORS, ANISOTROPY
- Ankara Üniversitesi Adresli: Evet
Özet
We aimed to investigate the influence of Er3+ rare earth element on the frequency conversion wavelength in boron doped GaSe crystals. It was found that by substitution of Er3+ with B3+, SHG signal shifted to higher wavelength. In addition, the nonlinear absorption properties and ultrafast dynamics of pure, 0.5 at% B3+ and 0.25 at% B3+ + 0.25 at% Er3+ doped GaSe cristals have been studied by open aperture Z-scan and ultrafast pump probe spectroscopy techniques. All of the studied crystals showed nonlinear absorption (NA). It was observed that 0.5 at% B3+ doped GaSe crystal showed bleach signal. This signal switched to NA signal with long life after substitution of 0.25 at% Er3+ with 0.25 at% B3+. (C) 2017 Elsevier B.V. All rights reserved.