Photothermal spectroscopy with hollow-core optical fiber
文献类型：专利
| 作者 | JIN, WEI; CAO, YINGCHUN; YANG, FAN; HO, HOI LUT |
| 发表日期 | 2017-12-19 |
| 专利号 | US9846118 |
| 著作权人 | THE HONG KONG POLYTECHNIC UNIVERSITY SHENZHEN RESEARCH INSTITUTE |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Photothermal spectroscopy with hollow-core optical fiber |
| 英文摘要 | The present invention provides a gas measuring method based on photothermal effect in hollow-core optical fiber comprising: filling a target gas into the core of a hollow-core optical fiber; coupling a probe light and a periodically modulated pump light into the hollow-core optical fiber; absorbing the pump light by the target gas resulting in the periodic modulation of the phase of the probe light; demodulating the phase modulation information of the probe light to obtain the concentration of the target gas, wherein the pump laser is wavelength and/or amplitude modulated. In the present invention, two lasers including a pump laser and a probe laser are used for the measurement, this approach is simple and practical. Also, the use of the hollow-core optical fiber with extremely-small core area greatly increases the optical power density, thus enhances the strength of the detected photothermal signal; this method allows ppb level gas measurement with high selectivity, and is universally suitable for the detection of gases with absorption in near-infrared. |
| 公开日期 | 2017-12-19 |
| 申请日期 | 2016-04-13 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34534]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | THE HONG KONG POLYTECHNIC UNIVERSITY SHENZHEN RESEARCH INSTITUTE |
| 推荐引用方式 GB/T 7714 | JIN, WEI,CAO, YINGCHUN,YANG, FAN,et al. Photothermal spectroscopy with hollow-core optical fiber. US9846118. 2017-12-19. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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