【摘 要】
：
We report the direct generation of cylindrical-vector beams with a temporal duration of 6.9 ps in a mode-locked fiber laser using a carbon nanotube saturable absorber.By offset splicing single-mode fi
【机 构】
：
Northwestern Polytechnical Univ China
【出 处】
：
2016年第二届光子学与光学工程国际会议暨第八届西部光子学会议
论文部分内容阅读
We report the direct generation of cylindrical-vector beams with a temporal duration of 6.9 ps in a mode-locked fiber laser using a carbon nanotube saturable absorber.By offset splicing single-mode fiber and two-mode fiber,a part of the fundamental mode is converted into azimuthally-or radially-polarized beams.With a two-mode fiber Bragg grating,the residual fundamental mode is reflected back the radially-or azimuthally-polarized cylindrical-vector beam is exported from the laser.Such ultrafast cylindricalvector beams exhibit unique features both in the temporal domain and spatial domain,providing a unique light source for nonlinear optics,laser machining,and nanoparticle manipulation.
其他文献
The 1 s core level excited spectra in BP were calculated using quantum mechanical methods from the first principles by simulation.The 3D model of BP were reconstructed by simulation,and created a core
A novel fiber Bragg grating(FBG)with three reflection wavelengths is proposed and demonstrated experimentally by simply phase-mask-based grating inscription over the splice interface between a thin-co
Citrus greening or Huanglongbing(HLB)is one of most serious citrus diseases in the world.Once a tree is infected.there is no cure.The feasibility was investigated for discriminating citrus greening by
Natural light will be partially polarized or totally polarized after the reflection,scattering,absorption and refraction of the objects.When detecting the ocean from the satellite orbit,the remote sen
Visibility data have long needed to traffic meteorological monitoring and warning system,but visibility data have monitored with expensive special equipment.Visibility degradation in fog is due to the
For large incident angle and wide spectral range optical system,it is difficult to get ideal polarization sensitivity(PS)only by thin film optimization.In order to reduce PS,orienting incident plane m
Silver-based high reflectance coatings are widely used in space optical system.While silver is soft and has poor adhension to dielectric material used as substrate.Bonding layers are often added to ov
The current state of single frequency fiber laser technology based on different saturable absorbers(SA)is reviewed.The proposed and experimental fiber lasers used ytterbium-doped fiber(YDF)as the gain
Optical system alignment has a great influence on the whole system accuracy.In this paper,the processing of optical system alignment was mainly studied,the processing method of optics on the primary a
The basic principle of tempo-spatially mixed modulated Fourier transform imaging spectrometer(FTIS)based on savart plates is outlined.A calibration method of pixel response nonuniformity of charge-cou