NDLI: Airy Pulsed Beams

Content Provider	IEEE Xplore Digital Library
Author	Kaganovsky, Y. Heyman, E.
Copyright Year	2010
Description	Author affiliation: School of Electrical Engineering, Tel Aviv University, 69978, Israel (Kaganovsky, Y.; Heyman, E.)
Abstract	The Airy beams (AiB's) have attracted a lot of attention recently because of their intriguing features, the most distinctive one is the propagation along curved trajectories in free-space. These beams are also weakly diffractive along their trajectories, i.e., they retain their structure and remain essentially diffraction-free for distances that are much longer than Gaussian beams with the same width. We have previously shown that the AiB is in fact a caustic of rays that radiate from the periphery of the aperture. In the present paper we derive ultra wideband (UWB) Airy Pulsed Beams (AiPB's), which are the extension of the AiB's into the time domain. We introduce a frequency scaling of the initial aperture field that renders the ray skeleton of the field, including the caustic, frequency independent, thus ensuring that all the frequency components propagate along the same curved trajectory, so that the AiPB does not disperse due to the wide frequency band. The resulting AiPB's preserve the intriguing features of the time-harmonic AiB's discussed above. Closed form solutions for the AiPB's are derived using the Spectral Theory of Transients (STT). The STT solution also explains how the strong pulsed field is formed in regions near the caustic, including its shadow side.
Starting Page	000727
Ending Page	000731
File Size	196019
Page Count	5
File Format	PDF
ISBN	9781424486816
e-ISBN	9781424486823
DOI	10.1109/EEEI.2010.5662117
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-17
Publisher Place	Israel
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Apertures Trajectory Transient analysis Optimized production technology Closed-form solution Time domain analysis Propagation
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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