Search results
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Title
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WAVEGUIDE, PHOTODETECTOR, AND IMAGING APPLICATIONS OF MICROSPHERICAL PHOTONICS
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Author
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Allen, Kenneth
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Date Created
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2014
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Subjects--Topical
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Optics, Engineering, Physics
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Description
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Dielectric microspheres with diameters (D) on the order of several wavelengths of light have attracted increasing attention from the photonics community due to their ability to produce extraordinarily tightly focused beams termed "photonic nanojet...
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Title
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Vortices in coherent and partially coherent optical beams
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Author
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Stahl, Charlotte
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Date Created
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2018
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Subjects--Topical
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Optics
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Description
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Vortices in optical beams have been the subject of extensive study since their status as a generic feature of light was established. They have found extensive use in optical trapping systems, astronomy, microscopy and are being investigated for fr...
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Title
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Variable extended depth of field imaging using freeform optics
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Author
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Moein, Sara
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Date Created
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2022
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Subjects--Topical
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Optics
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Description
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Recent advancements in design, manufacturing, and metrology have enabled broader use of freeform components for high-performing optical systems. Freeform optics, which lack rotational symmetry, provide additional design freedoms that can enable co...
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Title
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Variable Shearing Holography
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Author
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Shanmugam, Prithiviraj
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Date Created
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2023
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Subjects--Topical
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Mechanical engineering, Optics
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Description
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From the perspective of manufacturing, it is not always ideal to use conventional methods of surface and optical metrology. Many optical metrology systems like interferometry use a stable temperature-controlled environment in a laboratory setting ...
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Title
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Use of Optical Superbeams in Atmospheric Turbulence Applications
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Author
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Gu, Yalong
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Date Created
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2011
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Subjects--Topical
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Optics
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Description
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The use of nonconventional beam classes in turbulence applications is investigated. Through the study on pseudo-Bessel correlated beam propagation in the atmosphere, it is shown that scintillation reduction by a partially coherent beam can be obta...
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Title
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Ultraprecision Diamond Machining of Polycarbonate Complex Multi-Sided Freeform Optics
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Author
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Swagler, Steven
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Date Created
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2022
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Subjects--Topical
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Optics, Mechanical engineering
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Description
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Advances in technology are driving optical systems to become more and more complex and compact. Ultra-precision machining centers have advanced to catch up with optical designs but there is a defined set of methods defining the use of the machines...
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Title
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Thulium Fiber Laser Lithotripsy
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Author
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Blackmon, Richard
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Date Created
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2013
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Subjects--Topical
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Optics, Biomedical engineering
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Description
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The Thulium Fiber Laser (TFL) has been studied as a potential alternative to the conventional Holmium:YAG laser (Ho:YAG) for the treatment of kidney stones. The TFL is more ideally suited for laser lithotripsy because of the higher absorption coef...
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Title
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The evolution of spectral intensity and orbital angular momentum of twisted Hermite Gaussian Schell model beams in turbulence
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Author
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Gbur, Greg, Yu, Jiayi, Cai, Yangjian, Lin, Rong
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Date Created
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2020
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Subjects--Topical
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Physics, Optics
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Description
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We introduce a new class of twisted partially coherent beams with a non-unifirm correlation structure. These beams, called twisted Hermite Gaussian Schell model (THGSM) beams, have a correlation structure related to Hermite functions and a twist f...
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Title
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THEORY AND NUMERICAL ANALYSIS OF INDEX-ANTIGUIDED WAVEGUIDE LASERS
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Author
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Wang, Chaofan
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Date Created
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2017
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Subjects--Topical
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Optics
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Description
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Index-antiguided (IAG) waveguide is promising for high-power application due to simple step-index structure and the property to introduce higher waveguide loss for higher-order-modes (HOMs). The loss ratio between fundamental mode (FM) and 1st HOM...
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Title
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Surface Scatter of Antireflective Nanostructured Dielectric Interfaces
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Author
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Gonzalez, David
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Date Created
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2023
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Subjects--Topical
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Optics, Physics, Engineering
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Description
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Anti-reflective nanostructured surfaces (ARSS) enhance optical transmission through suppression of Fresnel reflection at boundaries between layered media by creating a gradually increasing ratio of material to air volume fraction. Previous studies...
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Title
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Strategies for employing surface plasmons in near-field optical readout systems
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Author
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Gbur, Greg, Gan, Choon How
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Date Created
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2006
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Subjects--Topical
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Physics, Optics
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Description
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The enhanced transmission of light through subwavelength-size holes in a metal plate is well-known to be associated with surface plasmons. We have undertaken a systematic theoretical study of several strategies for applying these plasmon effects i...
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Title
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Spiral spectrum of a Laguerre-Gaussian beam propagating in anisotropic non-Kolmogorov turbulent atmosphere along horizontal path
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Author
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Gbur, Greg, Zeng, Jun, Liu, Xianlong, Cai, Yangjian
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Date Created
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2019
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Subjects--Topical
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Physics, Optics
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Description
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Close to the ground, it is generally known that atmospheric turbulence exhibits strong anisotropy, which affects the performance of applications such as free-space optical (FSO) communication. In this paper, we establish a theoretical model for ca...
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Title
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Specification and Modeling of Mid-Spatial Frequency Errors in Optical Systems
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Author
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DeMars, Luke
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Date Created
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2023
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Subjects--Topical
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Optics
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Description
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Recent advancements in manufacturing and post-processing of optics with sub-aperture methods have enabled greater degrees of freedom to realize complex optical surfaces. Introduction of residual mid-spatial frequency (MSF) surface errors is a cons...
