【摘 要】
：
The heterogeneous integration of silicon thin film and lithium niobate[LN]thin film combines both the advantages of the excellent electronics properties and mature micro-processing technology of Si and the excellent optical properties of LN,comprising a p
【机 构】
：
School of Physics,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China
论文部分内容阅读
The heterogeneous integration of silicon thin film and lithium niobate[LN]thin film combines both the advantages of the excellent electronics properties and mature micro-processing technology of Si and the excellent optical properties of LN,comprising a potentially promising material platform for photonic integrated circuits.Based on ion-implantation and wafer-bonding technologies,a 3 inch wafer-scale hybrid mono-crystalline Si/LN thin film was fabricated.A high-resolution transmission electron microscope was used to investigate the crystal-lattice arrangement of each layer and the interfaces.Only the H-atom-concentration distribution was investigated using secondary-ion mass spectroscopy.High-resolution X-ray-diffraction ω-2θ scanning was used to study the lattice properties of the Si/LN thin films.Raman mea-surements were performed to investigate the bulk Si and the Si thin films.Si strip-loaded straight waveguides were fabricated,and the optical propagation loss of a 5-pm-width waveguide was 6 dB/cm for the quasi-TE mode at 1550 nm.The characterization results provide useful information regarding this hybrid material.
其他文献
We use the nonlinear coupled-mode theory to theoretically investigate second-harmonic generation[SHG]in subwave-length x-cut and z-cut lithium niobate[LN]thin-film waveguides and derive the analytical formula to calculate SHG efficiency in x-cut and z-cut
We study the effect of dimension variation for second-harmonic generation[SHG]in lithium niobate on insulator[LNOI]waveguides.Non-trivial SHG profiles in both type-0 and type-Ⅰ quasi-phase matching are observed during the wavelength tuning of the fundamen
介绍了一种基于反射式体布拉格光栅(RBG)的高重复频率窄脉宽的固体单频激光器.该激光器采用激光二极管端面泵浦的方式,Nd ∶ YVO4晶体为增益介质,磷酸氧钛铷(RTP)晶体对为电光调Q开关,RBG为输出镜,在光学腔长为65.7 mm的谐振腔内,锁定了波长1064.355 nm的单频激光输出,其在10 kHz的重复频率下,脉冲宽度为1.3 ns、平均功率为1.68 W、光束质量M2x=1.22和My2=1.18,可应用于空间主动光电遥感技术中.
The spiderlike structures in the photoelectron momentum distributions of ionized electrons from the hydrogen atom are numerically simulated by using a semiclassical rescattering model[SRM]and solving the time-dependent Schr(o)dinger equation[TDSE],focusin
Lithium metal has a very outstanding theoretical capacity (3860 mAh/g) and is one of the most superior anode materials for high energy density batteries. However, the uncontrollable dendrite growth and the formation of“dead lithium”are the important hidde
In this paper,we experimentally demonstrate ultrafast optical control of slow light in the terahertz[THz]range by combining the electromagnetically induced transparency[EIT]metasurfaces with the cut wire made of P+-implanted silicon with short carrier lif
Radio frequency[RF]self-interference is a key issue for the application of in-band full-duplex communication in beyond fifth generation and sixth generation communications.Compared with electronic technology,photonic technology has the advantages of wide
End-pumped by a 976 nm diode laser,a high-repetition-rate Er∶Yb∶YAl3(BO3)4 microchip laser passively Q-switched by a Co2+ ∶ MgAl2O4 crystal is reported.At a quasi-continuous-wave pump power of 20 W,a 1553 nm passively Q-switched laser with the repetition
Based on the transverse second-harmonic generation[TSHG]effect,we demonstrate a method for in-situ modal inspection of nonlinear micro/nanowaveguides.Pumping lights are equally split and coupled into two ends of a single CdS nanobelt[NB].As pumping light
谐振式光纤陀螺(RFOG)是基于Sagnac效应产生的顺时针光路与逆时针光路的谐振频率差来测量旋转角速率的光学传感器.由于Sagnac效应极为微弱,RFOG常采用信号调制解调技术提高检测精度.首先介绍了基于正弦相位调制解调的RFOG的基本原理及衡量其性能的主要指标,详细推导了基于正弦相位调制解调的RFOG系统受散粒噪声制约的理论角度随机游走(ARW)的表达式,分析了调制参数包括调制频率和调制系数对理论ARW的影响.研究表明,在给定的激光功率及光纤环形谐振腔条件下,存在一组最佳的调制参数和解调相位,用于实现