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Presider: Hong Lin, Bates College, USA
LM3H – 1 Optimization of a laser induced fluorescence platform, Thomas Aumer, Michael Cascio, Theodore Corcovilos, Duquesne University, PA 15282. Laser Induced Fluorescence (LIF) complements mass spectrometry (MS) for protein identification by counting MS mass fragments when run in tandem with MS. Fluorescence allows for quantification: the amount of light re-emitted is proportional to sample concentration. Reactions are run on a polydimethylsiloxane microfluidic chip to minimize needed sample volumes.
LM3H – 2 Novel distance estimates to a variable star via photometric analysis, Kathryn Fagan, Cian Bell, Ben McClure, David Sukow, Washington and Lee University, Lexington, VA 24450. Via extension of photometric methods into the infrared, we generated lightcurves for a star of variable luminosity, and employed their analysis to determine its oscillation period. From formulae linking a star’s metallicity to its period-luminosity relation, we derived novel distance estimates in three wavelength bands.
LM3H – 3 Numerical analysis of dynamics of vertical-cavity surface-emitting lasers subject to orthogonal and parallel optical injection, Paul Chapman, Muhammad Abdullah, Hong Lin, Bates College, Lewiston, ME 04240. We demonstrate that polarized optical injection can alter the occurrence of polarization switching and induce various dynamical phenomena (e. g. frequency locking, periodic oscillations) in vertical-cavity surface-emitting lasers, among which period-one dynamics can be used for photonic generation of microwaves. Supported by Bates College.
LM3H – 4 Developing a portable, smartphone-based Schlieren imaging system, Grace N. Riermann, Keith R. Stein, Bethel University, St. Paul, MN 55112. Schlieren imaging is a technique for visualizing fluid flows that are characterized by spatial variations in density or refractive index. Because schlieren imaging is commonly performed with expensive equipment in a lab setting, we sought cost efficiency, accessibility, and ease of fabrication by designing a portable, smartphone-based system. Supported by NSF.
LM3H – 5 Low cost laser beam stabilization and monitoring, Sara Sayer, Disleve Kanku, Cosmin Blaga, Daniel Rolles, Kansas State University, Manhattan, KS 66506. We report a laser beam pointing stabilization and monitoring apparatus designed for university-scale laser systems based on a low-cost RaspberryPi microcomputer, 4K CMOS cameras, and servo mirror mounts. A first prototype has been successfully deployed to continuously stabilize and monitor the beam over several hours. Work supported by NSF.
LM3H – 6 Ray optics invisibility cloaking using axicon lenses, Ava Ianuale1, Eric Jones2, Harold Metcalf 2 1) Montclair High School, Montclair NJ 07042 2) Physics and Astronomy, Stony Brook Univ., Stony Brook NY 11794. We employed geometric optics to investigate macroscopic invisibility cloaking methods in the visible spectrum. We expanded on existing methods of cloaking to develop a model of a cloak using axicon lenses with a circular cloaking region.
LM3H – 7 Progress towards single-photon time-of-flight imaging, Kevin Eckrosh, Matthew Brown, Markus Allgaier, Brian J. Smith, Oregon Center for Optical, Molecular and Quantum Science and Department of Physics, University of Oregon, Eugene, OR 97403. The spatial distribution of a pulsed light source at the single-photon level is determined by coupling the field into an array of differing length fibers, which are fused into a single fiber. The output is monitored with a single-photon detector and time-tagging electronics. Results using attenuated laser pulses are presented.
LM3H – 8 Development of a high-speed measurement system for surface enhanced Raman spectroscopy, Sarah Bense1, Eric Katsma1, Makayla Schmidt1, Marit Engevik1, Tryg Burgau1, Nathan Lemke1, Ariadne Bido2, Alexandre Brolo2, Nathan Lindquist1, 1Bethel University, St Paul, MN 55127 USA; 2University of Victoria, Victoria, BC V8P 5C2, Canada. We discuss the development of a system to collect and analyze intensity and spectral data at one million frames per second. This system is then used to study the Surface-Enhanced Raman Spectroscopy (SERS) effect for single molecules in a variety of samples. Supported by NSF.
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