Gareth T. Williams's research while affiliated with San Jose State University and other places
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Publications (11)
The San Jose State University Physics Department, located in Silicon Valley, provides students with a high quality education in optics and provides local high-tech industry and government laboratories with a partner for optics- related research and development projects. There are approximately 50 undergraduate majors and 20 graduate (M.S.) students...
Scitation is the online home of leading journals and conference proceedings from AIP Publishing and AIP Member Societies
Without disputing the excitement and sense of accomplishment associated with the production of display holograms, this paper suggests equal rewards from the production of holographic optical elements (HOEs). The elements described here are zone plates, diffraction gratings, interference filters and mirrors, and lenses. Ways of making each of these...
Inexpensive battery-operated motors can be used for a variety of safe, fast, laser beam-steering and modulation activities, a number of which have been developed as part of the Laser Applications in Science Education (LASE) Project at San Jose State University. Those described here will be a laser stroboscope using a spinning slotted disc; a circul...
Inexpensive battery-operated motors can be used for a variety of safe, fast, laser beam-steering and modulation activities, a number of which have been developed as part of the Laser Applications in Science Education (LASE) Project at San Jose State University.
Those described here will be a) a laser stroboscope using a spinning slotted disc, b) a...
Without disputing the excitement and sense of accomplishment associated with the production of display holograms, this paper suggests equal rewards from the production of holographis optical elements (HOE’s). The elements described here are zone plates, diffraction gratings, interference filters and mirrors, and lenses. Ways of making each in an op...
Located in high-tech Silicon Valley, California, San Jose State University is ideally suited to provide students with a high quality education in optics, and to provide industry with a partner for optics related research and development projects. There are 130 undergraduates majors and 65 graduate (MS) students in the Physics Department. For the pa...
The Laser Applications in Science Education (LASE) Project at San Jose State University, involved with introducing the laser into the middle and high school classroom as a key teaching tool, is described in this paper. Selected middle and high school teachers were first taught course material at workshops sponsored by the National Science Foundatio...
Yeast and bacteria growth has been detected by observing light diffracted from specially prepared diffracting
screens upon which these organisms were grown. The screens were fabricated by impressing patterns on the
surface of a growing medium. As the microbes metabolized, they caused severe changes in the lightdiffracting
properties of the patterns...
Yeast and bacteria growth has been detected by observing light diffracted from specially prepared diffracting
screens upon which these organisms were grown. The screens were fabricated by impressing patterns on the
surface of a growing medium. As the microbes metabolized, they caused severe changes in the lightdiffracting
properties of the patterns...
Citations
... It has long been regarded as a fundamental resolution limit in optics that people strive to diminish, rather than a means to view objects. Although grating diffraction is widely used to disperse wavelength and detecting microbial growth [2][3][4] and obstacle diffraction is frequently used in x-ray diffraction to characterize crystalline structures and scattering of microparticles to identify their sizes [5,6], there are far fewer examples utilizing aperture diffraction. In 2005, King and Leblanc proposed inserting a low-aperture imaging optics to form an enlarged but deformed image by diffraction, but an optical lens combination was used in forming the image, with software programmed for deformation corrections [7]. ...
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