Boulder Scientific Company

Akonia Holographics LLC

Inphase Technologies, Inc.

Bayer Materialscience Ag

Fredric R Askham

Mark R Ayres

Michael Christopher Cole

Friedrich-Karl Bruder

Jeffrey M Sullivan

Friso Schlottau

Kenneth E Anderson

Adam Urness

Bradley Jay Sissom

William L Wilson

Lisa Dhar

Timothy J Trentler

Songvit Setthachayanon

Karin A Voll Barclay

Dawn A Arkin

Mark David Michaels

Hamlin H Barnes

Sean Quirin

Nicolas Stöckel

Marianela Trujillo-Lemon

Sam Miller

Thomas Riley Morris

Marianela T Lemon

Suchit Madan

Timothy John Trentler

Songvit Settachayanon

Samuel John Miller

A system and method of performing incoherent light treatment is disclosed. The method may include securing a recording medium to a securing structure within an internal cavity and delivering light at least partially toward a baffle disposed within the internal cavity. The method may also include securing one or more diffusers to one or more surfaces of the recording medium.

Incoherent light treatment

Methods and systems for performing dynamic aperture holography are described. Examples include a method of recording multiple holograms in a photosensitive recording medium, where multiple signal beam angular apertures used to record the multiple holograms differ from each other. The multiple signal beam angular apertures can facilitate using a larger range of reference beam angular apertures. The multiple holograms are typically multiplexed, and examples of dynamic aperture holography enable packing the multiplexed holograms more densely in the recording medium. Some dynamic aperture holography systems include monocular objective lens architecture.

Dynamic aperture holography

Dynamic range enhancing dopants for photopolymeric media are described. Also described are optical articles using these dopants and methods for making such optical articles.

Photopolymer media with enhanced dynamic range

An optical medium is provided. The optical medium comprises: a diffusion-controlling matrix framework; at least one photoactive monomer attached to the diffusion-controlling matrix framework in a first state of the optical medium, wherein the at least one photoactive monomer is released from the diffusion-controlling matrix framework by photo cleavage, producing a second state of the optical medium, in which diffusion of the photoactive monomer through the optical medium is possible; and wherein the at least one photoactive monomer is then polymerized or reattached to the diffusion-controlling matrix, giving a third state of the optical medium, when exposed to photo-polymerizing light.

Holographic storage medium and method for gated diffusion of photoactive monomer

The present invention relates to a system, as well as articles and holographic recording medium comprising the system, where the system comprises: a polymerizable component comprising at least one photoactive polymerizable material; and a photoinitiator component comprising at least one photoinitiator for causing the polymerizable component to polymerize to thereby form a plurality of holographic gratings when activated by exposure to a photoinitiating light source; wherein when a portion of the polymerizable component has been polymerized to form at least one holographic grating, the unpolymerized portion of the polymerizable component is resistant to further polymerization when not exposed to the photoinitiating light source. The present invention also provides methods for forming at least one holographic grating in a holographic recording medium having such a photopolymerizable system.

Holographic recording medium with control of photopolymerization and dark reactions

High performance media suitable for recording with a blue laser is disclosed. The blue-sensitized holographic media provides greater dynamic range and higher sensitivity than previously disclosed blue-sensitized holographic media. These media can be used for diverse applications such as data storage where the articles provide denser data storage and more rapid hologram writing times or for optical waveguides where the articles provide greater optical confinement and more rapid manufacturing times.

Advantageous recording media for holographic applications

A process for preparing a cyclopentadienyl or indenyl ruthenium complex by treatment of a cyclopentadienyl or indenyl compound with ruthenium trichloride dihydrate and magnesium powder in an alkanol at 10&deg; C. to &minus;30&deg; C. is described.

Synthesis of bis (cyclopentadienyl) and bis (indenyl) ruthenium complexes

Synthesis of 2-halobenzyl alkanoic acid

Pentafluorophenyl Grignard reagents are reacted with a boron trihalide in a non-ethereal solvent such as toluene to produce a tetrakis pentafluorophenyl borate magnesium halide.

Tetrakis-pentafluorophenyl borates from pentafluorophenyl grignard reagents

A method of converting Compound A (1,3-dehydro-cyclopenta[1]phenanthren-2-one) to Compound C (1H-cyclopenta[1]penanthren) in situ in a single reactor is disclosed.

Synthesis of n-silylated cyclopentaphenanthrene compounds

A method for the synthesis of certain N-silylated cyclopentaphenanthrene (Group IV metal) complexes is disclosed.

Synthesis of N-silylated cyclopentaphenanthrene compounds

A method for producing tetrakis (pentafluorophenyl) borates is described. Hexafluorobenzene is converted to bromopentafluorobenzene which may be isolated and then reacted with an alkyl lithium to produce pentafluorophenyl lithium which in turn is reacted directly with an appropriate reagent to produce the desired borate.

Growing community of inventors

Loveland, CO, United States of America

Fredric R Askham