500 GHz宽带双偏振光学频率梳的产生

来源 :中国激光 | 被引量 : 0次 | 上传用户:john20002000
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
提出了一种基于光电反馈产生500 GHz宽带双偏振光学频率梳的方案.该方案基于光电环路反馈1550 nm垂直腔面发射激光器,采用自旋反转模型,利用四阶龙格-库塔算法数值仿真研究了光电反馈参数对光学频率梳特性的影响.研究结果表明:通过光电反馈参数的调节可以控制1550 nm垂直腔面发射激光器输出的偏振状态,可实现Y偏振和X偏振光学频率梳的转换.此外,研究发现,在特定的光电反馈参数条件下,可获得Y偏振和X偏振同时存在的双偏振光学频率梳.并且在一定的光电反馈参数范围内,两个偏振方向的光学频率梳的光谱带宽都会随着光电反馈系数的增加而增大,相应的功率谱会随光电反馈系数的增加而变得越来越平坦.通过光电反馈系数及反馈时间的调节,获得了谱线平坦、梳线纯净、谱带超宽的光学频率梳,在10 dB幅度范围内Y偏振光学频率梳的光谱带宽可达250 GHz,X偏振光学频率梳的光谱带宽可达500 GHz.
其他文献
Highly active and low-cost catalytic electrodes for urea oxidation reaction (UOR) are always crucial for exploration of urea fuel cells. Herein, novel york-shell-structural Ni2P/C nanosphere hybrids (Ni2P/C-YS) are rationally constructed via a hydrotherma
Periodically poled lithium niobate on insulator[LNOI]ridge waveguides are desirable for high-efficiency nonlinear frequency conversions,and the fabrication process of such waveguides is crucial for device performance.In this work,we report fabrication and
We demonstrate a three-nanosecond equidistant sub-pulse multi-step Q-switched Nd∶Y3Al5O12[Nd∶YAG]laser.In the time interval of 100-1000 ns,three pulses with the same nanosecond interval and the same peak power are obtained at the pulse width of 24 ns,28 n
Molybdenum disulfide (MoS2) has excellent trapping ability for lead ions whereas its micro-/nanoscale size has greatly impeded its practical applications in the flow-through systems. Herein, a millimeter-sized nanocomposite MoS2-001 was synthesized for Pb
Recently,nonlinear photonics has attracted considerable interest.Among the nonlinear effects,second harmonic generation[SHG]remains a hot research topic.The recent development of thin film lithium niobate[TFLN]technology has superior performances to the c
We investigate the influences of structure parameters and interface shapes on the bandwidth of the edge state of lithium niobate valley photonic crystals.By increasing the size difference of two air holes in the same unit cell,we find that the bandwidth o
A fiber-based source that can be exploited in a stimulated emission depletion[STED]inspired nanolithography setup is presented.Such a source maintains the excitation beam pulse,generates a ring-shaped depletion beam,and automatically realizes dual-beam co
We show that inhomogeneous waveguides of slowly varied parity-time[PT]symmetry support localized optical resonances.The resonance is closely related to the formation of exceptional points separating exact and broken PT phases.Salient features of this kind
Photoacoustic microscopy[PAM]has quickly developed into a noninvasive biomedical imaging technique to achieve detec-tion,diagnosis,and monitoring.Compared with Q-switched neodymium-doped yttrium aluminum garnet or optical para-metric oscillator lasers,a l
As a promising spectral window for optical communication and sensing,it is of great significance to realize on-chip devices at the 2 μm waveband.The development of the 2 μm silicon photonic platform mainly depends on the performance of passive devices.In