Search Results - "Tabiryan, Nelson V."

Hidden Gratings in Holographic Liquid Crystal Polymer-Dispersed Liquid Crystal Films by De Sio, Luciano, Lloyd, Pamela F, Tabiryan, Nelson V, Bunning, Timothy J

“…Dynamic diffraction gratings that are hidden in the field-off state are fabricated utilizing a room-temperature photocurable liquid crystal (LC) monomer and…”
Get full text

Thin waveplate lenses of switchable focal length--new generation in optics by Tabiryan, Nelson V, Serak, Svetlana V, Roberts, David E, Steeves, Diane M, Kimball, Brian R

“…We present new lenses - waveplate lenses created in liquid crystal and liquid crystal polymer materials. Using an electrically-switchable liquid-crystal…”
Get full text

Advances in Transparent Planar Optics: Enabling Large Aperture, Ultrathin Lenses by Tabiryan, Nelson V., Roberts, David E., Liao, Zhi, Hwang, Jeoung‐Yeon, Moran, Mark, Ouskova, Olena, Pshenichnyi, Andrii, Sigley, Justin, Tabirian, Anna, Vergara, Rafael, De Sio, Luciano, Kimball, Brian R., Steeves, Diane M., Slagle, Jonathan, McConney, Michael E., Bunning, Timothy J.

“…Unlike electronics, optics do not follow Moore's law. This statement, expressed by Microsoft's Bernard Kress, refers to the hard challenges to solve in…”
Get full text

Improving vector vortex waveplates for high-contrast coronagraphy by Nersisyan, Sarik R, Tabiryan, Nelson V, Mawet, Dimitri, Serabyn, Eugene

“…Vector vortex waveplates (VVWs) open the door to new techniques in stellar coronagraphy and optical communications, but the performance of currently available…”
Get full text

Polarization insensitive imaging through polarization gratings by Nersisyan, Sarik R, Tabiryan, Nelson V, Hoke, Landa, Steeves, Diane M, Kimball, Brian R

“…Liquid crystal polarization gratings exhibit high diffraction efficiency (approximately 100%) in thin material layers comparable to the radiation wavelength…”
Get full text

Recording polarization gratings with a standing spiral wave by Vernon, Jonathan P., Serak, Svetlana V., Hakobyan, Rafik S., Aleksanyan, Artur K., Tondiglia, Vincent P., White, Timothy J., Bunning, Timothy J., Tabiryan, Nelson V.

“…A scalable and robust methodology for writing cycloidal modulation patterns of optical axis orientation in photosensitive surface alignment layers is…”
Get full text

Beam steering for virtual/augmented reality displays with a cycloidal diffractive waveplate by Chen, Haiwei, Weng, Yishi, Xu, Daming, Tabiryan, Nelson V, Wu, Shin-Tson

“…We proposed a switchable beam steering device with cycloidal diffractive waveplate (CDW) for eye tracking in a virtual reality (VR) or augmented reality (AR)…”
Get full text

Ultrafast Photoalignment: Recording a Lens in a Nanosecond by Serak, Svetlana, Bunning, Timothy, Tabiryan, Nelson

“…Liquid crystals can be photoaligned with a single nanosecond pulse acting on thin photoanisotropic coatings on the cell substrates. This phenomenon was…”
Get full text

Experimental Verification of a Bigrating Beam Rider by Chu, Ying-Ju Lucy, Tabiryan, Nelson V, Swartzlander, Grover A

“…An optical beam rider making use of a light sail comprising two opposing diffraction gratings is experimentally demonstrated for the first time. We verify that…”
Get full text

All-optical diffractive/transmissive switch based on coupled cycloidal diffractive waveplates by Serak, Svetlana V, Hakobyan, Rafael S, Nersisyan, Sarik R, Tabiryan, Nelson V, White, Timothy J, Bunning, Timothy J, Steeves, Diane M, Kimball, Brian R

“…Pairs of cycloidal diffractive waveplates can be used to doubly diffract or collinearly propagate laser radiation of the appropriate wavelength. The use of a…”
Get full text

Broadband waveplate lenses by Tabiryan, Nelson V, Serak, Svetlana V, Nersisyan, Sarik R, Roberts, David E, Zeldovich, Boris Ya, Steeves, Diane M, Kimball, Brian R

“…We report on lenses that operate over the visible wavelength band from 450 nm to beyond 700 nm, and other lenses that operate over a wide region in the…”
Get full text

A common-path polarization-based image-inversion interferometer by Larson, Walker, Tabiryan, Nelson V, Saleh, Bahaa E A

“…We present a collinear, common-path image-inversion interferometer using the polarization channels of a single optical beam. Each of the channels is an imaging…”
Get full text

Phototunable Azobenzene Cholesteric Liquid Crystals with 2000 nm Range by White, Timothy J., Bricker, Rebecca L., Natarajan, Lalgudi V., Tabiryan, Nelson V., Green, Lisa, Li, Quan, Bunning, Timothy J.

“…Phototuning of more than 2000 nm is demonstrated in an azobenzene‐based cholesteric liquid crystal (azo‐CLC) consisting of a high‐helical‐twisting‐power,…”
Get full text

Opportunities for next generation vector vortex waveplates by Roberts, David E., Gerosa, Katherine, Ouskova, Olena, Pshenichnii, Andrii, Tabiryan, Nelson V., Serabyn, Eugene

“…Vector vortex waveplates (VVWs) are highly promising technology enabling astronomical coronagraph masks for exoplanet imaging and characterization. Currently,…”
Get full text

Azobenzene liquid crystalline materials for efficient optical switching with pulsed and/or continuous wave laser beams by Hrozhyk, Uladzimir A, Serak, Svetlana V, Tabiryan, Nelson V, Hoke, Landa, Steeves, Diane M, Kimball, Brian R

“…This study compares optical switching capabilities of liquid crystal (LC) materials based on different classes of azobenzene dyes. LCs based on molecules…”
Get full text

Generation of Light Scattering States in Cholesteric Liquid Crystals by Optically Controlled Boundary Conditions by Vernon, Jonathan, Serak, Svetlana, Hakobyan, Rafael, Tondiglia, Vincent, White, Timothy, Tabiryan, Nelson, Bunning, Timothy

“…Circularly polarized light was previously employed to stimulate the reversible and reconfigurable writing of scattering states in cholesteric liquid crystal…”
Get full text

Photopiezoelectric Composites of Azobenzene-Functionalized Polyimides and Polyvinylidene Fluoride by Wie, Jeong Jae, Wang, David H., Tondiglia, Vincent P., Tabiryan, Nelson V., Vergara-Toloza, Rafael O., Tan, Loon-Seng, White, Timothy J.

“…Light is a readily available and sustainable energy source. Transduction of light into mechanical work or electricity in functional materials, composites, or…”
Get full text

Optically switchable, rapidly relaxing cholesteric liquid crystal reflectors by Hrozhyk, Uladzimir A, Serak, Svetlana V, Tabiryan, Nelson V, White, Timothy J, Bunning, Timothy J

“…Reversible, fast, all-optical switching of the reflection of a cholesteric liquid crystal (CLC) is demonstrated in a formulation doped with push-pull…”
Get full text

Thermoplasmonic Activated Reverse-Mode Liquid Crystal Gratings by De Sio, Luciano, Lloyd, Pamela F, Tabiryan, Nelson V, Placido, Tiziana, Comparelli, Roberto, Curri, Maria Lucia, Bunning, Timothy J

“…A new generation of reconfigurable optical components is conceived by bridging the photothermal properties of gold nanoparticles and the thermosensitivity of…”
Get full text

Photostimulated control of laser transmission through photoresponsive cholesteric liquid crystals by Vernon, Jonathan P, Zhao, Aaron D, Vergara, Rafael, Song, Hyunmin, Tondiglia, Vincent P, White, Timothy J, Tabiryan, Nelson V, Bunning, Timothy J

“…Cholesteric liquid crystals (CLCs) are selectively reflective optical materials, the color of which can be tuned via electrical, thermal, mechanical, or…”
Get full text