Browsing by Author "Cheng, Yu Chieh"
Now showing items 1-10 of 10
-
Acoustically penetrable sonic crystals based on fluid-like scatterers
(2015-01-21)
Article
Open AccessWe propose a periodic structure that behaves as a fluid-fluid composite for sound waves, where the building blocks are clusters of rigid scatterers. Such building-blocks are penetrable for acoustic waves, and their properties ... -
Beam focalization by chirped mirrors
(Optical Society of American (OSA), 2014)
Conference report
Restricted access - confidentiality agreementA novel application of chirped dielectric mirrors for narrow beam focalization is proposed and demonstrated numerically and experimentally. Analogy to temporal dispersion compensation by chirped dielectric mirrors is discussed. -
Beam focalization in reflection from flat dielectric subwavelength gratings
(2014-10-15)
Article
Restricted access - publisher's policyWe experimentally demonstrate the recently predicted effect of near-field focusing for light beams from flat dielectric subwavelength gratings (SWGs). This SWGs were designed for visible light 532 nm and fabricated by ... -
Beam focusing in chirped mirror with a defect
(IEEE Press ; Wiley, 2004)
Conference report
Restricted access - publisher's policyRecently the beam focusing in reflection from chirped dielectric mirror has been proposed and demonstrated, where the negative (anomalous) diffraction is responsible for this flat mirror focusing. For a strong focusing ... -
Beam focusing in reflections from flat subwavelength diffraction gratings
(2014-03-10)
Article
Open AccessWe predict that narrow beams, reflecting from flat subwavelength diffraction gratings, can focus. The effect is shown for the beams of electromagnetic radiation; however, it should be observable for beams of waves of ... -
Controllable light diffraction in woodpile photonic crystals filled with liquid crystal
(2015-01-12)
Article
Open AccessAn approach to switching between different patterns of light beams transmitted through the woodpile photonic crystals filled with liquid crystals is proposed. The phase transition between the nematic and isotropic liquid ... -
Diffraction control of reflected beam by chirped mirror
(2013)
Conference lecture
Restricted access - publisher's policyWe propose and demonstrate a novel functionality of chirped mirror for monochromatic light beams: a diffraction control in reflections resulting in focusing or imaging of beams. The chirped mirrors, commonly used for ... -
Flat focusing in reflection from a chirped dielectric mirror with a defect layer
(2015-03-04)
Article
Open AccessRecently, the principle of flat focusing based on one-dimensionally chirped dielectric mirrors has been proposed and experimentally demonstrated. The flat chirped mirror causes anomalous diffraction of the beam during ... -
Flat focusing mirror
(MACMILLAN PUBLISHERS LIMITED, 2014-09-17)
Article
Open AccessThe control of spatial propagation properties of narrow light beams such as divergence, focusing or imaging are main objectives in optics and photonics. In this letter, we propose and demonstrate experimentally a flat ... -
Focalization of evanescent beams
(IEEE, 2012)
Conference lecture
Restricted access - publisher's policyWe predict and show the existence of unlocked evanescent waves in two dimensional periodic structures. In a one dimensional periodic structure an evanescent mode are located either at the center or at the boundary of the ...
