H01S 3/1394
By using an active reference
Official title: {by using an active reference, e.g. second laser, klystron or other standard frequency source}
H01S3/1394 (By using an active reference) appears on 76 US grants and 60 published applications in this corpus.
Search patents in H01S- Granted patents
- 76
- Published applications
- 60
- Assignees
- 52
- Inventors
- 164
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 4 | 3 |
| 2004 | 2 | 0 |
| 2005 | 0 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 6 |
| 2009 | 7 | 1 |
| 2010 | 2 | 4 |
| 2011 | 3 | 0 |
| 2012 | 3 | 5 |
| 2013 | 1 | 2 |
| 2014 | 3 | 2 |
| 2015 | 2 | 4 |
| 2016 | 3 | 1 |
| 2017 | 4 | 5 |
| 2018 | 4 | 4 |
| 2019 | 0 | 1 |
| 2020 | 1 | 3 |
| 2021 | 2 | 2 |
| 2022 | 2 | 2 |
| 2023 | 0 | 4 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tunable microchip laser and laser system for ranging applications24 Mar 2026US 12,586,976 B2
- Laser device and method for operating laser device11 Mar 2025US 12,249,802 B2Nichia Corporation
- Laser system10 May 2022US 11,329,447 B2M Squared Lasers Limited
- Single longitudinal mode ring Raman laser3 May 2022US 11,322,905 B2Macquarie University
- Precision frequency combs1 Jun 2021US 11,025,027 B2Imra America, Inc.
- Laser system and laser stabilization method21 May 2026US 2026/0142437 A1Korea Advanced Institute of Science and Technology
- Fpga-based control system and method for ti:sapphire laser7 May 2026US 2026/0128563 A1Shanxi University
- Synchronization of mode-locked lasers4 Jul 2024US 2024/0222934 A1Cyber-Ridge Ltd.
- Method and device for locking repetition rate of optical frequency combs11 Jan 2024US 2024/0014625 A1Beijing Aerospace Institute for Metrology and Measurement Technology
- Systems and methods for high energy-efficient coherent raman spectroscopy with a dual-comb laser19 Oct 2023US 2023/0335970 A1BaySpec, Inc.
Most cited
By later US patents
- Narrow band excimer laser and wavelength detecting apparatus78US 5,404,366 AKabushiki Kaisha Komatsu Seisakusho · 1995
- Passively mode-locked fiber lasers73US 6,097,741 ACalmar Optcom, Inc. · 2000
- Generation of a wavelength-tunable laser oscillation in a wave-guiding gain medium based on passive mode lock69US 6,373,867 B1Calmar Optcom, Inc. · 2002
- Passively mode-locked fiber lasers67US 6,570,892 B1Calmar Optcom, Inc. · 2003
- Heterodyne laser spectroscopy system57US 4,817,101 AThe United States of America as represented by the United States Department of Energy · 1989