Method for measuring concentrations of multiple gases by using infrared band laser light
US11841320B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2023 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Jul 12, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring concentrations of multiple gases by using an infrared band laser light includes: pumping Ho crystal by using a 1.9 μm single thulium-doped solid-state laser to obtain a 2 μm band near-infrared laser output; controlling a light-emitting angle of 2 μm band laser light; allowing the 2 μm laser light to enter a first measurement cell at a first emergent angle, and measuring a concentration of methane gas in the first measurement cell; generating and introducing the 3-5 μm mid-infrared laser light into a second measurement cell to measure concentrations of ammonia gas and carbon monoxide in the second measurement cell; generating and introducing the 6-12 μm far-infrared laser light into a third measurement cell to measure concentrations of carbon dioxide, acetylene, ethylene and ethane gas in the third measurement cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.