zhao yang, li dehua, zhou wei, et al. Diffractive properties of terahertz zone plates with Gaussian beam incidence[J]. High Power Laser and Particle Beams, 2011, 23.
Citation: zhao yang, li dehua, zhou wei, et al. Diffractive properties of terahertz zone plates with Gaussian beam incidence[J]. High Power Laser and Particle Beams, 2011, 23.

Diffractive properties of terahertz zone plates with Gaussian beam incidence

  • Publish Date: 2011-09-13
  • Diffractive properties of the continuous phase type zone plate with Gaussian beam incidence were analyzed based on Rayleigh-Sommerfeld diffraction theory. The simulations of intensity distribution on the focal plane and the optic axis were completed using Matlab. Diffraction fields of the zone plate with continuous phase were analyzed. The effects of the parameters of the incident beam on the diffraction field were discussed. The results indicate that the continuous phase type zone plate can focus Gaussian beam with high diffraction efficiency. Diffraction law of the continuous phase type zone plate is similar to that of thin lens. If the waist location is optimized, the diffraction efficiency will be larger than 85%. Compared with the plane wave incidence, when the Gaussian beam is incide
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