G02F 1/3546
Active phase matching
Official title: {Active phase matching, e.g. by electro- or thermo-optic tuning}
G02F1/3546 (Active phase matching) appears on 137 US grants and 107 published applications in this corpus.
Search patents in G02F- Granted patents
- 137
- Published applications
- 107
- Assignees
- 124
- Inventors
- 362
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 1 | 5 |
| 2003 | 1 | 2 |
| 2004 | 6 | 2 |
| 2005 | 4 | 4 |
| 2006 | 2 | 1 |
| 2007 | 3 | 3 |
| 2008 | 4 | 9 |
| 2009 | 2 | 6 |
| 2010 | 10 | 10 |
| 2011 | 6 | 7 |
| 2012 | 3 | 3 |
| 2013 | 6 | 5 |
| 2014 | 2 | 0 |
| 2015 | 3 | 6 |
| 2016 | 4 | 3 |
| 2017 | 2 | 6 |
| 2018 | 6 | 1 |
| 2019 | 2 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 5 |
| 2022 | 6 | 6 |
| 2023 | 4 | 7 |
| 2024 | 4 | 8 |
| 2025 | 6 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Radiation source and a method for generating electromagnetic radiation at a plurality of frequencies18 Aug 2026US 12,712,332 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Apparatus for inspecting surface of object30 Dec 2025US 12,510,491 B2Samsung Electronics Co., Ltd.
- Photonic analog-to-digital converter (pADC) with photonic phase correction21 Oct 2025US 12,449,714 B2Rockwell Collins, Inc.
- Bright sources for pure photons entanglement2 Sep 2025US 12,405,509 B2OZ Optics Ltd.
- Ultra-broadband mid-infrared generation in dispersion-engineered thin-film lithium niobate12 Aug 2025US 12,386,237 B2NTT Research, Inc.
- Method and apparatus for the generation of second harmonic radiation by means of crystals with noncritical phase matching, with control over the relative phase between a fundamental electromagnetic field and an electromagnetic field with double frequency9 Jul 2026US 2026/0194785 A1LEOS S.r.L.
- Tunable nonlinear photonic structure16 Apr 2026US 2026/0104622 A1City University of Hong Kong
- Adapting optical properties of a continuous body comprising nonlinear optical material to light of different wavelengths by adjusting a temperature distribution in the continuous body12 Feb 2026US 2026/0044047 A1Max-Planck-Gesellschaft Zur FöRderung Der Wissenschaften E. V.
- Light generating apparatus and method8 Jan 2026US 2026/0010052 A1Arizona Board of Regents on Behalf of the University of Arizona
- Photonic analog-to-digital converter (padc) with photonic phase correction4 Sep 2025US 2025/0278011 A1Rockwell Collins, Inc.
Most cited
By later US patents
- High power pumped mid-IR wavelength systems using nonlinear frequency mixing (NFM) devices88US 5,912,910 ASDL, Inc. · 1999
- Power enhanced frequency conversion system87US 6,301,273 B1SDL, Inc. · 2001
- Frequency conversion system86US 6,301,271 B1SDL, 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
- Diode pumped laser and doubling to obtain blue light72US 4,809,291 ABoard of Trustees, of Leland Stanford Jr U. · 1989