Fiber Laser Design Optimization Patents: Leaders & White Space 2026
- A small, concentrated field. only 12 published families sit inside this search, with filings peaking in 2020 and none logged since — a narrow, still-open claim space rather than a crowded one.
- One patent carries the field's citation weight. US20210021095A1, Raytheon's spectral beam combining phase-modulation patent, draws 13 citations against a field where most records draw none.
- Filings cluster in lasers, not systems. H01S laser-and-emission claims outnumber G02B optical-system claims nearly 3:2, and X-ray-adjacent H05G filings show the technique reaching outside conventional laser markets.
A narrow, technically dense corner of laser patenting
Fiber laser design optimization — cavity design, beam quality optimization and mode control — is a small filing category set against the much larger fiber laser field. Across 2015 to 2026 the search returns only 12 published families, concentrated in the years around 2020 rather than spread evenly across the window. That scarcity is informative: it means the specific claim language of “cavity design optimization,” “beam quality optimization” and “mode control design” has not yet been heavily fought over, even where the underlying fiber laser hardware is well established.
Receiving-office data shows filing activity split across Israel, Europe, India, the United States and the WIPO PCT route in roughly even numbers, which points to applicants protecting the technique in multiple jurisdictions rather than defending a single home market. IPC composition shows the claims sit predominantly in H01S (lasers and stimulated emission), with a secondary cluster in G02B (optical elements and systems) and a smaller presence in H05G (X-ray technique), suggesting mode-control and beam-quality methods are migrating into adjacent high-energy and imaging applications.
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Filing trend and technology composition
Twelve families is a small enough sample that yearly counts should be read as signal of where activity has clustered, not as a statistically stable trend. The technology split across IPC subclasses is more durable evidence of where the claim language actually lives.
Filings peaked in 2020, then went quiet
Filing activity rose to a peak of 6 records in 2020 before dropping to zero by the 2022 midpoint and staying flat through the most recent complete years. Because publication lags filing by roughly 18 months, the last one or two years in any chart of this kind will always understate true filing activity — but even allowing for that lag, this category shows no sustained rebound after its 2020 peak.
H01S dominates, with G02B and H05G as secondary branches
H01S (lasers and stimulated emission) accounts for 10 of the tagged records, confirming that most applicants are claiming the laser cavity and gain-medium mechanics directly. G02B (optical elements and systems) appears in 7 records, reflecting beam-shaping and mode-control optics claimed alongside or instead of the laser itself. H05G (X-ray technique) appears twice, a small but notable signal that beam-quality and mode-control methods developed for fiber lasers are being repurposed for X-ray-generation applications.
Shares are the percentage of the 12 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
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Try EurekaThe citation record is dominated by one family
System and method for spectral line shape optimization for spectral beam combining of fiber lasers
A system includes at least one controller configured to determine an optical phase modulation pattern for suppression of stimulated Brillouin scattering (SBS) in a combined beam that emerges off a diffractive grating in a spectral beam combining (SBC) system and maximization of an output power of the combined beam. The system also includes multiple master oscillators configured to generate multiple beams in the SBC system, multiple phase modulators configured to phase modulate the multiple beams according to the determined pattern, and multiple fiber amplifier chains configured to receive and amplify the phase-modulated beams.US20210021095A1, filed by Raytheon Company, published 2021-01-21 and cited 13 times within this dataset — the highest citation count of any record returned.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20210021095A1 | System and method for spectral line shape optimization for spectral beam combining of fiber lasers | 13 |
| 2 | US11757248B2 | System and method for spectral line shape optimization for spectral beam combining of fiber lasers | 2 |
Citation counts here reflect influence within this searched corpus and favour older, earlier-published records; they are not a measure of current commercial importance.
Publication numbers are shown where the record carries one (2 of 2 rows); clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
With only 12 families in the entire dataset, the usual signals of market maturity — dense sub-claim thickets, heavy year-over-year growth — are absent. What is present is a clear concentration of citation weight and a technique that is starting to cross into adjacent applications.
One family carries almost all the citation weight
US20210021095A1's spectral line shape optimization method for spectral beam combining draws far more citations than any other record in this dataset, with its continuation US11757248B2 adding a further 2. Anyone designing SBS-suppression or spectral beam combining architectures is working in the shadow of this family.
Activity peaked and did not resume
Filings rose to 6 in 2020 and fell to zero by 2022, with no rebound in the years since. Given the 18-month publication lag, the most recent years understate true activity, but the multi-year gap after 2020 is too long to attribute to lag alone.
Mode-control techniques are crossing into X-ray applications
A small but real cluster of records tags H05G (X-ray technique) alongside the core H01S laser classification, indicating beam-quality and mode-control methods originally built for fiber lasers are being adapted for X-ray-generation systems.
Protection is spread thin across jurisdictions
No single receiving office accounts for more than 4 of the 12 records, and filings through Israel, Europe, India, the US and the PCT route are all within a narrow range of each other. That spread, combined with the small total, suggests applicants are hedging jurisdictional bets rather than concentrating defence in one market.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to fiber laser design optimization, with the prior art for and against each one.
A field with no dominant repeat filer
Recent-year momentum data shows the named assignees in this dataset — including Raytheon, the Council of Scientific and Industrial Research, and ASML Netherlands — logged zero filings in the latest year, with ASML showing a full year-over-year drop. That flat momentum across the board, rather than concentration behind one company, is itself the finding: no single organisation is currently pressing an advantage in this specific claim space.
Raytheon Company
Holds the dataset's most-cited record, US20210021095A1, covering phase-modulation control for spectral beam combining and SBS suppression, plus its continuation US11757248B2. This is the family any SBC or high-power fiber laser combiner design should be checked against first.
Council of Scientific and Industrial Research
Appears in the assignee set for this topic but shows no filing activity in the most recent year captured, consistent with the field-wide slowdown after 2020.
ASML Netherlands
Recorded a full year-over-year decline to zero filings in the latest year, mirroring the broader post-2020 quiet across this dataset rather than an isolated pullback.
| Assignee | Recent year | YoY |
|---|---|---|
| Raytheon Company | 0 | — |
| Council of Scientific and Industrial Research | 0 | — |
| ASML Netherlands B.V. | 0 | -100% |
Where to take this analysis
The dataset is small enough that a manual review of all 12 families is practical before committing to a filing strategy or a design-around.
Map the SBS-suppression claim boundary
Run the full claim set of US20210021095A1 and its continuation against any planned spectral beam combining or phase-modulation design to see exactly where the boundary sits.
Explore the citation network in EurekaTrack the H05G crossover
Watch whether mode-control and beam-quality techniques continue moving into X-ray-generation applications, since this dataset shows early movement but not yet a sustained trend.
Set up a monitoring alert in EurekaRevisit after the next publication window
Because of the 18-month publication lag, filings from the last one to two years are not yet fully visible; a follow-up pull in 12 months will clarify whether the post-2020 slowdown has genuinely persisted.
Build a refreshed search in EurekaCommon questions on fiber laser design optimization patents
This specific search, combining fiber laser terms with cavity design optimization, beam quality optimization and mode control design language, returns 12 published patent families between 2015 and 2026. That is a small number compared to the broader fiber laser patent landscape, which reflects how narrowly this search targets the design-optimization language rather than general fiber laser hardware. Filing activity peaked at 6 records in 2020 and has been quiet since, though recent years are understated due to publication lag.
Raytheon Company holds the most-cited record in this dataset, US20210021095A1, covering a controller-based method for suppressing stimulated Brillouin scattering and optimizing spectral line shape in spectral beam combining systems, cited 13 times within this corpus. Its continuation, US11757248B2, adds a further 2 citations. No other assignee in this dataset approaches that citation count, making Raytheon's family the reference point for anyone working on spectral beam combining or SBS suppression.
The dataset shows filings peaking at 6 in 2020 and falling to zero by the 2022 midpoint, with no rebound in subsequent complete years. Some of that apparent drop is an artefact of publication lag, since patent applications typically publish around 18 months after filing, so the most recent one to two years in any dataset will always look thinner than they eventually turn out to be. Even accounting for that lag, though, the multi-year gap suggests the specific design-optimization claim language captured by this search saw a genuine slowdown after 2020 rather than simply a reporting delay.
Cavity design optimization claims typically address the physical laser cavity structure, gain medium arrangement and resonator geometry to improve output power or efficiency, which is why most records in this dataset classify under H01S, the lasers and stimulated emission subclass. Mode control design claims instead target how the beam's spatial or spectral modes are shaped or stabilized after generation, often overlapping with G02B optical elements and systems classifications. In practice many patents, including the lead record in this dataset, claim both together, combining cavity-level phase modulation with beam-combining optics in a single system.
Yes, on a limited but visible scale. Two records in this dataset classify under H05G, the X-ray technique subclass, alongside the core H01S laser classification, indicating that beam-quality and mode-control methods developed for fiber lasers are being adapted for X-ray-generation systems. It is a small fraction of the total 12 families, but it is a concrete signal that this design-optimization technique is not confined to conventional fiber laser markets.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.