News

On the Cover: Topological photonic states in artificial microstructures [Invited]

The image on the cover for Chinese Optics Letters Volume 19, Issue 5, indicates that Topological photonics provides a new opportunity for the examination of novel topological properties of matter, in which the energy band theory and ideas in topology are utilized to manipulate the propagation of photons.The image is based on original research by Hui Liu et al. presented in their paper "Topological photonic states in artificial microstructures [Invited]", Chinese Optics Letters 19 (5), 052602 (2021).

  • Journal
  • 1th Sep,2021

On the Cover: Extremely regular periodic surface structures in a large area efficiently induced on silicon by temporally shaped femtosecond laser

The image on the cover for Photonics Research Volume 9, Issue 5, indicates that Femtosecond laser-induced periodic surface structures (LIPSS) have several applications in surface structuring and functionalization. Three major challenges exist in the fabrication of regular and uniform LIPSS: enhancing the periodic energy deposition, reducing the residual heat, and avoiding the deposited debris. The image is based on original research by Yuchan Zhang et al. presented in their paper "Extremely regular periodic surface structures in a large area efficiently induced on silicon by temporally shaped femtosecond laser", Photonics Research 9 (5), 05000839 (2021).

  • Journal
  • 1th Sep,2021

On the Cover: Resolving and weighing the quantum orbits in strong-field tunneling ionization

The image on the cover for Advanced Photonics Volume 3, Issue 3, depicts tunneling ionization of an atom, as induced by a strong laser pulse. The complex hologram in the photoelectron momentum spectrum, which encodes rich structural and dynamic information of the atom, originates from the interference of the photoelectrons tunneling at different times during the laser pulse. By introducing a weak second harmonic field, the contributions of the photoelectrons tunneling at different times are identified, a significant step toward imaging the ultrafast dynamics in atoms and molecules with the photoelectron spectroscopy of tunneling ionization.The image is based on original research by Jia Tan et al. presented in their paper “Resolving and weighing the quantum orbits in strong-field tunneling ionization,” Adv. Photon.3(3), 035001 (2021).

  • Journal
  • 20th Jul,2021

On the Cover: Thermo-optically tunable spectral broadening in a nonlinear ultra-silicon-rich nitride Bragg grating

The image on the cover of Photonics Research Volume 9, Issue 4, demonstrates temperature tunable spectral broadening using a nonlinear ultra-silicon-rich nitride device consisting of a 3-mm-long cladding-modulated Bragg grating and a 7-mm-long nonlinear channel waveguide. Provided by Y. Cao et al., researchers from Singapore University of Technology and Design, Ecole Polytechnique Fédérale de Lausanne, Institute of Microelectronics, A*STAR and The University of Sydney, the image is based on the research presented in their article "Thermo-optically tunable spectral broadening in a nonlinear ultra-silicon-rich nitride Bragg grating", Photonics Research 9(4) 04000596, doi 10.1364/PRJ.411073.

  • Journal
  • 27th Apr,2021