Patents
US 9228273 B2: Nonlinear optical crystals and their manufacture and use
- Granted
- 2016-01-05
- Filed
- 2011-11-21 application 13301538
- Type
- Utility · 11 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described are nonlinear optical (NLO) crystals, including aluminum-borate NLO crystals, that have low concentrations of contaminants that adversely affect the NLO crystal's optical properties, such as compounds that contain transition-metal elements and/or lanthanides, other than yttrium, lanthanum, and lutetium. Some NLO crystals with low concentrations of these contaminants are capable of second harmonic generation at very short wavelengths. Also described are embodiments of a method for making these NLO crystals. Some embodiments involve growing a single NLO crystal, such as an aluminum-borate NLO crystal, from a mixture containing a solvent that is substantially free of harmful contaminants. The described NLO crystals can be used, for example, in laser devices.
Source: PVGPATDIS, file of 2026-04-10 (ipg160105.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| State of Oregon acting by and through the State Board of Higher Ed. on Behalf of Oregon State Univ. 76 patents | US company or organization | Corvallis, OR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Douglas A. Keszler | Corvallis, OR | 50 | PVGPATDIS, file of 2026-04-10 | |
| Ning Ye | Fujian, CN | 79 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C30B | Single-crystal growth ; unidirectional solidification of eutectic material or unidirectional demixing of eutectoid material; refining by zone-melting of material ; production of a homogeneous polycrystalline material with defined structure ; single crystals or homogeneous polycrystalline material with defined structure; after-treatment of single crystals or a homogeneous polycrystalline material with defined structure ; apparatus therefor | C30B9/00 | PVGPATDIS, file of 2026-04-10 |
| C09K | Materials for miscellaneous applications, not provided for elsewhere | C09K11/7712 | PVGPATDIS, file of 2026-04-10 |
| G02F | Optical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein; non-linear optics; frequency-changing of light; optical logic elements; optical analogue/digital converters | G02F1/3551 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2011-12-23 | Government interest Confirmatory license | OREGON STATE UNIVERSITY signed 2011-11-28 | NATIONAL SCIENCE FOUNDATION ARLINGTON, VA | 27440/812 | ECORSEXC, file of 2026-09-25 |
| 2011-12-14 | Assignment Assignment of assignor's interest | KESZLER, DOUGLAS A. signed 2007-04-26 YE, NING signed 2007-05-08 | STATE OF OREGON ACTING BY AND THROUGH THE STATE BOARD OF HIGHER EDUCATION ON BEHALF OF OREGON STATE UNIVERSITY CORVALLIS, OR | 27384/760 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.