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Approximate expressions for resonant shifts in the reflection of Gaussian wave packets from two-dimensional photonic crystal waveguides

Miri, M ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1364/JOSAB.29.000683
  3. Publisher: Optical Society of American (OSA) , 2012
  4. Abstract:
  5. In this paper, enhanced spatial and temporal shifts in the reflection of Gaussian wave packets from twodimensional photonic crystal waveguides supporting above-the-light-line leaky modes are studied, for the first time to our best knowledge. Particular attention is given to two important special cases, namely, harmonic Gaussian beams and Gaussian-pulse uniform plane waves. Analytical expressions are given for enhanced spatial and temporal shifts when the stationary phase approximation holds and the incident wave excites above-the-light-line leaky modes. The enhanced spatial and temporal shifts of Gaussian wave packets are thereby related to each other via the group velocity of the excited leaky modes
  6. Keywords:
  7. Gaussian beams ; Laser optics ; Analytical expressions ; Approximate expressions ; Gaussian Wave Packets ; Group velocities ; Incident waves ; Leaky modes ; Plane wave ; Stationary-phase approximation ; Temporal shifts ; Two-dimensional photonic crystals ; Optical waveguides
  8. Source: Journal of the Optical Society of America B: Optical Physics ; Volume 29, Issue 4 , 2012 , Pages 683-690 ; 07403224 (ISSN)
  9. URL: https://www.osapublishing.org/josab/abstract.cfm?URI=josab-29-4-683