Pre-engineered abruptly autofocusing beams.
نویسندگان
چکیده
We introduce a new family of (2+1)D light beams with pre-engineered abruptly autofocusing properties. These beams have a circularly symmetric input profile that develops outward of a dark disk and oscillates radially as a sublinear-chirp signal, creating a series of concentric intensity rings with gradually decreasing width. The light rays involved in this process form a caustic surface of revolution that bends toward the beam axis at an acceleration rate that is determined by the radial chirp itself. The collapse of the caustic on the axis leads to a large intensity buildup right before the intended focus. This ray-optics interpretation provides valuable insight into the dynamics of abruptly autofocusing waves.
منابع مشابه
Fourier-space generation of abruptly autofocusing beams and optical bottle beams.
We demonstrate analytically and experimentally that a circular abruptly autofocusing (AAF) Airy beam can be generated by Fourier-transforming an appropriately apodized Bessel beam whose radial oscillations are chirped by a cubic phase term. Depending on the relation between the chirp rate and the focal distance of the Fourier-transforming lens, it is possible to generate AAF beams with one or t...
متن کاملAbruptly autofocusing and autodefocusing optical beams with arbitrary caustics
Ioannis D. Chremmos,1,* Zhigang Chen,2 Demetrios N. Christodoulides,3 and Nikolaos K. Efremidis1 1Department of Applied Mathematics, University of Crete, Heraklion 71409, Crete, Greece 2Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132 USA 3CREOL/College of Optics, University of Central Florida, Orlando, Florida 32816 USA (Received 10 November ...
متن کاملObservation of abruptly autofocusing waves.
We report on the experimental observation of abruptly autofocusing waves. This interesting family of wave packets has been realized by using a radially symmetric Airy intensity distribution. As demonstrated in our experiments, these waves can exhibit unusual features, such as the ability to autofocus by following a parabolic trajectory toward their focus.
متن کاملGuided Self-Accelerating Airy Beams—A Mini-Review
Owing to the nondiffracting, self-accelerating, and self-healing properties, Airy beams of different nature have become a subject of immense interest in the past decade. Their interesting properties have opened doors to many diverse applications. Consequently, the questions of how to properly design spatial manipulation of Airy beams or how to implement them in different setups have become impo...
متن کاملEnhanced terahertz wave emission from air-plasma tailored by abruptly autofocusing laser beams
KANG LIU, ANASTASIOS D. KOULOUKLIDIS, DIMITRIOS G. PAPAZOGLOU, STELIOS TZORTZAKIS, AND XI-CHENG ZHANG* The Institute of Optics, University of Rochester, 275 Hutchison Road, Rochester, New York 14627, USA Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 1527, 71110 Heraklion, Greece Department of Material Science and Technology, University of C...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Optics letters
دوره 36 10 شماره
صفحات -
تاریخ انتشار 2011