title: Design of transmission blazed binary gratings for optical limiting with the form-birefringence theory.
abstract: The structure of transmission blazed binary gratings for optical limiting is designed with the form-birefringence theory. This kind of grating has subwavelength features, can imitate the transmission blazed grating effectively, and has higher efficiencies than a transmission blazed grating with a subwavelength structure. The diffraction efficiencies are calculated and analyzed. For the normal incident light with 10.6 microm wavelength, the transmissivities for the designed grating at 0 degrees deviation angle for TE and TM polarizations are 0.05% and 5.09%, respectively, which are basically identical to the results of the finite-difference time-domain method. The diffraction efficiencies of the first transmitted order for TE and TM polarizations are 93.95% and 83.88%, respectively.
authors.affiliation: Institute of Modern Optics, Key Laboratory of Opto-Electronic Information Science and Technology of the Education Ministry of China, Nankai University, Tianjin 300071, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Lu
authors.forename: Dengfeng
authors.initials: D
authors.lastname: Kuang
authors.forename: Guoguang
authors.initials: G
authors.lastname: Mu