Differential frequency generation
US-2024243541-A1 · Jul 18, 2024 · US
Quasi phase matching [QPM], e.g. using a periodic domain inverted structure
Quasi phase matching [QPM], e.g. using a periodic domain inverted structure · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F1/3548 |
| Official title | {Quasi phase matching [QPM], e.g. using a periodic domain inverted structure} |
| Display label | Quasi phase matching [QPM], e.g. using a periodic domain inverted structure |
| Total patents | 127 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 10 |
| 2019 | 5 |
| 2020 | 15 |
| 2021 | 7 |
| 2022 | 12 |
| 2023 | 17 |
| 2024 | 17 |
| 2025 | 14 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Laser beam output apparatus
US-2021305764-A1 · Sep 30, 2021 · US
Single beamline multiwavelength infrared radiation source
US-11048143-B1 · Jun 29, 2021 · US
Wavelength converter
US-2020387047-A1 · Dec 10, 2020 · US
System and method for generating multiple simultaneous, co-propagating wavelengths via nonlinear wavelength conversion
US-10852621-B1 · Dec 1, 2020 · US
Optical device and method for manufacturing optical device
US-10830948-B2 · Nov 10, 2020 · US
Optical wavelength converter and method for manufacturing optical wavelength converter
US-2020348578-A1 · Nov 5, 2020 · US
Optical-frequency up-converting spectrometric imager
US-10824049-B1 · Nov 3, 2020 · US
Kind of visible ultraviolet band optical frequency converter
US-10809594-B2 · Oct 20, 2020 · US
Optical wavelength conversion device
US-2020264491-A1 · Aug 20, 2020 · US
Kind of visible ultraviolet band optical frequency converter
US-2020233280-A1 · Jul 23, 2020 · US
Wavelength conversion device and method of manufacturing wavelength conversion device
US-2020230913-A1 · Jul 23, 2020 · US
Device for generating a polychromatic and spatially self-adapted beam of photons
US-10718991-B2 · Jul 21, 2020 · US
Optical device and method for manufacturing optical device
US-2020225408-A1 · Jul 16, 2020 · US
Optical wavelength conversion device and method for manufacturing the same
US-2020218127-A1 · Jul 9, 2020 · US
Optical wavelength conversion device and method for manufacturing the same
US-10698292-B1 · Jun 30, 2020 · US
Optical device including poled crystal region and amorphous region
US-10663656-B2 · May 26, 2020 · US
Growth/fabrication of organic-inorganic quasi phase-matching structures for frequency conversion devices
US-10554015-B1 · Feb 4, 2020 · US
High-sensitive swept-source optical coherence tomography system and methods of use thereof
US-10429170-B2 · Oct 1, 2019 · US
Multi-mode cavities for high-efficiency nonlinear wavelength conversion formed with overlap optimization
US-10353269-B2 · Jul 16, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F1/3548?
- CPC G02F1/3548 is the Cooperative Patent Classification code for “Quasi phase matching [QPM], e.g. using a periodic domain inverted structure.”
- How many patents are filed under CPC G02F1/3548 (Quasi phase matching [QPM], e.g. using a periodic domain inverted structure)?
- Our database includes 127 publications tagged with this CPC code.
- Is patent activity under CPC G02F1/3548 growing?
- Publication counts under this code: 17 in 2024 vs 14 in 2025 (latest complete years).