H01S 3/2325
Multi-pass amplifiers
Official title: {Multi-pass amplifiers, e.g. regenerative amplifiers}
H01S3/2325 (Multi-pass amplifiers) appears on 656 US grants and 599 published applications in this corpus.
Search patents in H01S- Granted patents
- 656
- Published applications
- 599
- Assignees
- 311
- Inventors
- 1,229
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 9 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 13 | 0 |
| 1997 | 13 | 0 |
| 1998 | 12 | 0 |
| 1999 | 8 | 0 |
| 2000 | 11 | 0 |
| 2001 | 7 | 1 |
| 2002 | 16 | 26 |
| 2003 | 18 | 24 |
| 2004 | 24 | 28 |
| 2005 | 13 | 32 |
| 2006 | 34 | 38 |
| 2007 | 26 | 23 |
| 2008 | 16 | 26 |
| 2009 | 26 | 32 |
| 2010 | 29 | 22 |
| 2011 | 22 | 33 |
| 2012 | 20 | 31 |
| 2013 | 29 | 32 |
| 2014 | 33 | 33 |
| 2015 | 31 | 16 |
| 2016 | 31 | 20 |
| 2017 | 21 | 20 |
| 2018 | 14 | 19 |
| 2019 | 21 | 19 |
| 2020 | 15 | 23 |
| 2021 | 12 | 14 |
| 2022 | 17 | 16 |
| 2023 | 8 | 18 |
| 2024 | 12 | 18 |
| 2025 | 14 | 18 |
| 2026 | 10 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device for amplifying a laser beam29 Sep 2026US 12,749,862 B2Thales
- Laser beam amplification device29 Sep 2026US 12,749,865 B2Thales
- Interleaved multi-pass optical amplifier16 Jun 2026US 12,658,667 B2Arizona Board of Regents on Behalf of the University of Arizona
- Passive high energy Q-switched laser system with optically synchronized multi-stage/multi-pass amplification9 Jun 2026US 12,651,883 B2Candela Corporation
- Laser device and pulse width-changing method3 Mar 2026US 12,567,711 B2Inter-University Research Institute Corporation National Institutes of Natural Sciences
- Laser chamber preionizer having acoustic scattering surface13 Aug 2026US 2026/0237956 A1Cymer, Inc.
- Pulsed laser system6 Aug 2026US 2026/0229836 A1Aqwest LLC
- Mid-infrared chirped pulse amplifier30 Jul 2026US 2026/0221709 A1University of Central Florida Research Foundation, Inc.
- Hybrid Amplifier for Laser Fusion30 Jul 2026US 2026/0221712 A1LaserFusionX, Inc.
- Laser device and electronic device manufacturing method23 Jul 2026US 2026/0213485 A1Gigaphoton Inc.
Most cited
By later US patents
- Method of, and apparatus for, surgery of the cornea329US 6,210,401 B12001
- Single-mode amplifiers and compressors based on multi-mode fibers291US 5,818,630 AImra America, Inc. · 1998
- Multiwavelength laser source226US 4,764,930 AIntelligent Surgical Lasers · 1988
- Apparatus and method for the generation of high-power femtosecond pulses from a fiber amplifier193US 6,014,249 AImra America, Inc. · 2000
- Laser obstacle ranging and display192US 7,847,235 B2Elbit Systems Electro-Optics Elop Ltd. · 2010