Mirrorless buried waveguide laser in monoclinic double tungstates fabricated by a novel combination of ion milling and liquid phase epitaxy.
Mirrorless buried waveguide laser in monoclinic double tungstates fabricated by a novel combination of ion milling and liquid phase epitaxy.
复制标题
通过离子铣削和液相外延的新颖组合制造的单斜双钨酸盐无镜掩埋波导激光器。
作者：
W. Bolaños;J. Carvajal;X. Mateos;G. S. Murugan;A. Subramanian;J. Wilkinson;E. Cantelar;D. Jaque;G. Lifante;M. Aguiló;F. Díaz
在微结构KY（WO 4）2衬底上，通过液相外延生长晶格匹配的KY（0.58）Gd（0.22）Lu（0.17）Tm（0.03）（WO 4）2薄膜，制备了埋沟波导。通过标准光刻和Ar离子研磨将通道转移到衬底上。研磨通道的底部和侧壁足够光滑（均方根粗糙度分别为70 nm和20 nm），以有利于有源层的外延生长，而在衬底/外延层的边界处没有缺陷。折射率对比度足以实现光限制，并且在1440 nm和1640 nm之间的波长处观察到具有低散射损耗的导模。连续激光器在室温下工作在1840 nm，观察到反馈仅由菲涅耳反射在端面，TE和TM偏振的斜率效率分别为4%和9%。
Buried channel waveguides were fabricated by liquid phase epitaxial growth of a lattice-matched KY(0.58)Gd(0.22)Lu(0.17)Tm(0.03)(WO4)2 film on a microstructured KY(WO4)2 substrate. Channels were transferred to the substrates by standard photolithography and Ar-ion milling. The bottom and sidewalls of the milled channels were smooth enough (rms roughness = 70 nm and 20 nm, respectively) to favour the epitaxial growth of the active layer without defects at the boundary of substrate/epitaxial layer. The refractive index contrast was sufficient to enable light confinement and guided modes with low scattering losses were observed at wavelengths between 1440 nm and 1640 nm. CW laser operation at 1840 nm at room temperature was observed with feedback provided only by Fresnel reflection at the end faces, with slope efficiencies of 4% and 9% for TE and TM polarizations, respectively.
紧凑型二极管泵浦 Yb3 :KY(WO4)2 平面波导激光器的连续波和 Q 开关操作。
影响因子：
3.8
作者：
Bain FM
通讯作者：
Bain FM