H01S 3/109
Frequency multiplication
Official title: Frequency multiplication, e.g. harmonic generation
H01S3/109 (Frequency multiplication) appears on 1,006 US grants and 839 published applications in this corpus.
Search patents in H01S- Granted patents
- 1,006
- Published applications
- 839
- Assignees
- 419
- Inventors
- 1,699
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 10 | 0 |
| 1990 | 15 | 0 |
| 1991 | 14 | 0 |
| 1992 | 20 | 0 |
| 1993 | 37 | 0 |
| 1994 | 33 | 0 |
| 1995 | 39 | 0 |
| 1996 | 35 | 0 |
| 1997 | 28 | 0 |
| 1998 | 28 | 0 |
| 1999 | 35 | 0 |
| 2000 | 29 | 0 |
| 2001 | 25 | 7 |
| 2002 | 15 | 25 |
| 2003 | 21 | 18 |
| 2004 | 28 | 37 |
| 2005 | 18 | 46 |
| 2006 | 21 | 63 |
| 2007 | 31 | 63 |
| 2008 | 39 | 61 |
| 2009 | 54 | 52 |
| 2010 | 57 | 52 |
| 2011 | 39 | 46 |
| 2012 | 32 | 40 |
| 2013 | 35 | 34 |
| 2014 | 25 | 30 |
| 2015 | 31 | 32 |
| 2016 | 27 | 32 |
| 2017 | 27 | 32 |
| 2018 | 17 | 18 |
| 2019 | 23 | 23 |
| 2020 | 13 | 21 |
| 2021 | 17 | 18 |
| 2022 | 16 | 21 |
| 2023 | 8 | 16 |
| 2024 | 13 | 28 |
| 2025 | 16 | 13 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Intracavity frequency conversion in solid-state laser resonator with end-pumping1 Sep 2026US 12,725,996 B2Coherent LaserSystems GmbH & Co. KG
- Ultraviolet laser light generation device25 Aug 2026US 12,719,227 B2Josho Gakuen Educational Foundation
- Multiple frequency laser system for treating skin conditions25 Aug 2026US 12,719,229 B2Candela Corporation
- Laser system14 Jul 2026US 12,683,351 B2The University of Birmingham
- Laser apparatus and method30 Jun 2026US 12,671,223 B2McMaster University
- Dual-beam combining laser frequency-doubling devices27 Aug 2026US 2026/0254189 A1Anhui Huachuang Hongdu Photoelectric Technology Co., Ltd.
- Hybrid Amplifier for Laser Fusion30 Jul 2026US 2026/0221712 A1LaserFusionX, Inc.
- Low noise non-resonant gain structure semiconductor lasers25 Jun 2026US 2026/0180287 A1Pavilion Integration Corporation
- Segmented temperature controllable wavelength conversion device18 Jun 2026US 2026/0169351 A1HC Photonics Corp.
- Non-collinear sum-frequency generation11 Jun 2026US 2026/0161043 A1Coherent LaserSystems GmbH & Co. KG
Most cited
By later US patents
- Modular, high energy, widely-tunable ultrafast fiber source230US 6,885,683 B1Imra America, Inc. · 2005
- Laser flashlight175US 6,142,650 A2000
- Intra-cavity beam relay for optical harmonic generation144US 5,025,446 ALaserscope · 1991
- Modular interchangeable laser system128US 4,979,180 A1990
- Frequency doubled solid state laser having programmable pump power modes and method for controllable lasers120US 5,151,909 ALaserscope · 1992