Frequency conversion, nonlinear absorption and carrier dynamics of GaSe:B/Er crystals

被引:7
|
作者
Yuksek, Mustafa [1 ]
Karatay, Ahmet [2 ]
Ertap, Huseyin [3 ]
Elmali, Ayhan [2 ]
Karabulut, Mevlut [4 ]
机构
[1] Kafkas Univ, Dept Elect & Elect Engn, Fac Engn, TR-36100 Kars, Turkey
[2] Ankara Univ, Dept Engn Phys, Fac Engn, TR-06100 Ankara, Turkey
[3] Kafkas Univ, Fac Sci & Letters, Dept Phys, TR-36100 Kars, Turkey
[4] Gebze Tech Univ, Nat Sci Fac, Dept Phys, TR-41400 Gebze, Kocaeli, Turkey
关键词
Frequency conversion; Nonlinear absorption; Carrier dynamics; GaSe; Erbium; Boron; 2-PHOTON ABSORPTION; OPTICAL-PROPERTIES; GALLIUM SELENIDE; SHG; SEMICONDUCTORS; ANISOTROPY;
D O I
10.1016/j.optmat.2017.02.007
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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.
引用
收藏
页码:137 / 141
页数:5
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