Zobrazeno 1 - 10
of 110
pro vyhledávání: '"John LaWall"'
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 2, Pp 1-11 (2017)
We demonstrate here a surface-normal ultracompact Fano resonance electro-optic spatial light modulator employing a stacked photonic crystal membrane capacitor-like structure. Vertically coupled optical resonance near 1.5 μm was observed, and both bl
Externí odkaz:
https://doaj.org/article/fe34e722f92c432399c58db8953f77fc
Autor:
Kirk Bowden, Adam Wuollet, Amol Patwardhan, Theodore J. Price, John Lawall, Jeffery Annabi, Steven Barker, Emil Annabi
Publikováno v:
Anesthesiology Research and Practice, Vol 2012 (2012)
This case report describes the successful treatment of chronic headache from intracranial hypotension with bilateral transforaminal (TF) lumbar epidural blood patches (EBPs). The patient is a 65-year-old male with chronic postural headaches. He had n
Externí odkaz:
https://doaj.org/article/50f52e7b84c2479887bec585bfbca6da
Publikováno v:
New Journal of Physics, Vol 14, Iss 12, p 125010 (2012)
We design, fabricate and study a novel platform for cavity optomechanics: a silicon nitride membrane patterned as a sub-wavelength diffraction grating. Using the grating as one mirror of a Fabry–Perot cavity, we realize an optical finesse of F = 28
Externí odkaz:
https://doaj.org/article/46b2bd13126d461b93aea106896265c5
Autor:
John Lawall
Publikováno v:
Optical and Quantum Sensing and Precision Metrology II.
Publikováno v:
Optics express. 29(23)
Photonic crystal slab devices with subwavelength periods can be tailored to provide remarkable functionality, such as ultrahigh reflectivity in a structure only 200 nm in thickness. Accurate measurement of the characteristics of these structures is e
Publikováno v:
Optical and Quantum Sensing and Precision Metrology.
Thin dielectric membranes patterned with a sub-wavelength period structure can be designed to exhibit remarkable properties, including reflectivity in excess of 99.9%. When fabricated from silicon nitride, they can become superb mechanical resonators
Publikováno v:
High Contrast Metastructures X.
By enabling high reflectivity from a single layer of dielectric, high-contrast gratings (HCGs) provide an exciting platform for optomechanics. In the interest of enhancing the mechanical quality factor of such devices, we have combined photonic and p
Publikováno v:
Frontiers in Optics + Laser Science 2021.
We demonstrate a silicon nitride membrane incorporating two-dimensional photonic crystal structure. A Fabry-Perot (FP) cavity with a finesse as high as 26500 is constructed using the photonic crystal mirror, corresponding a photonic crystal reflectiv
Autor:
Qing, Li, Anshuman, Singh, Xiyuan, Lu, John, Lawall, Varun, Verma, Richard, Mirin, Sae Woo, Nam, Kartik, Srinivasan
Publikováno v:
Phys Rev Appl
We demonstrate the tunable quantum beat of single photons through the co-development of core nonlinear nanophotonic technologies for frequency-domain manipulation of quantum states in a common physical platform. Spontaneous four-wave mixing in a nonl
Publikováno v:
Frontiers in Optics / Laser Science.
We demonstrate a hybrid phononic/photonic crystal mirror for optomechanics. A localized mechanical mode is created by a defect in a phononic crystal, which in turn supports a photonic crystal designed for high reflectivity.