G02F 1/3775
With a periodic structure
Official title: {with a periodic structure, e.g. domain inversion, for quasi-phase-matching [QPM] (G02F1/383 takes precedence)}
G02F1/3775 (With a periodic structure) appears on 248 US grants and 191 published applications in this corpus.
Search patents in G02F- Granted patents
- 248
- Published applications
- 191
- Assignees
- 130
- Inventors
- 494
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 13 | 0 |
| 1995 | 9 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 12 | 0 |
| 1999 | 7 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 6 |
| 2002 | 2 | 13 |
| 2003 | 5 | 7 |
| 2004 | 19 | 13 |
| 2005 | 12 | 5 |
| 2006 | 9 | 12 |
| 2007 | 5 | 8 |
| 2008 | 13 | 14 |
| 2009 | 6 | 15 |
| 2010 | 13 | 19 |
| 2011 | 11 | 13 |
| 2012 | 12 | 11 |
| 2013 | 8 | 4 |
| 2014 | 10 | 2 |
| 2015 | 3 | 2 |
| 2016 | 3 | 3 |
| 2017 | 3 | 2 |
| 2018 | 2 | 4 |
| 2019 | 3 | 4 |
| 2020 | 2 | 2 |
| 2021 | 3 | 3 |
| 2022 | 1 | 9 |
| 2023 | 4 | 3 |
| 2024 | 6 | 7 |
| 2025 | 1 | 4 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Widely tunable frequency doubled light source1 Sep 2026US 12,724,320 B1Thorlabs, Inc.
- Third-harmonic frequency generator and generation method25 Aug 2026US 12,717,209 B2Cornell University
- Nonlinear wave mixing system with grating-assisted phase matching20 May 2025US 12,306,513 B2Honeywell International Inc.
- Wavelength converter26 Nov 2024US 12,153,325 B2Nippon Telegraph and Telephone Corporation
- Wavelength conversion element and method for producing same11 Jun 2024US 12,007,666 B2Nippon Telegraph and Telephone Corporation
- Displacement sensing10 Sep 2026US 2026/0266594 A1UNM Rainforest Innovations
- Optical parametric amplifier10 Sep 2026US 2026/0267199 A1NTT, Inc.
- Segmented temperature controllable wavelength conversion device18 Jun 2026US 2026/0169351 A1HC Photonics Corp.
- Tunable nonlinear photonic structure16 Apr 2026US 2026/0104622 A1City University of Hong Kong
- Manufacturing Method for Wavelength Conversion Elements26 Mar 2026US 2026/0086421 A1NTT, Inc.
Most cited
By later US patents
- Bi-domain two-mode single crystal fiber devices261US 5,082,349 AThe Board of Trustees of the Leland Stanford Junior University · 1992
- Nonlinear optical radiation generator and method of controlling regions of ferroelectric polarization domains in solid state bodies96US 5,036,220 ALeland Stanford Junior University · 1991
- Use of Chirped Quasi-phase-matched materials in chirped pulse amplification systems96US 6,198,568 B1Imra America, Inc. · 2001
- Method, system and apparatus for automatically determining operating conditions of a periodically poled lithium niobate crystal in a laser system77US 9,048,616 B1Christie Digital Systems USA, Inc. · 2015
- Frequency doubling polymeric waveguide72US 4,865,406 AHoechst Celanese Corporation · 1989