Atomic frequency acquisition device based on self-mixing interference
文献类型：专利
| 作者 | MOENCH, HOLGER |
| 发表日期 | 2012-09-11 |
| 专利号 | US8264284 |
| 著作权人 | KONINKLIJKE PHILIPS ELECTRONICS N V |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Atomic frequency acquisition device based on self-mixing interference |
| 英文摘要 | The present invention relates to an atomic frequency acquisition device comprising a gas cell (400) filled with an atomic gas, a laser light source (100) emitting a laser beam which enters the gas cell (40) and excites a first energy transition of the atomic gas, a local oscillator (700) for generating an oscillator frequency in a frequency range including a frequency of a HFS transition of the atomic gas, and a modulator (600) modulating the laser light source (100) so as to emit laser radiation modulated with the oscillator frequency. An optical reflector (500) is arranged behind the gas cell (400) to reflect the laser beam after passage through the atomic gas so as to re-enter the laser cavity. A photodetector (200) detects beat frequencies caused by self-mixing interference within the laser cavity. A control unit (750, 800) controls the local oscillator (700) so as to periodically vary the oscillation frequency between two frequency margins which are adapted in such a way that a maximum beat frequency in the output signal of the photodetector (200) is within the two frequencies margins. The proposed device allows miniaturization and cost reduction by using a VCSEL with an integrated photodiode and achieves operation with fewer detection problems. |
| 公开日期 | 2012-09-11 |
| 申请日期 | 2009-05-27 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/46787]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | KONINKLIJKE PHILIPS ELECTRONICS N V |
| 推荐引用方式 GB/T 7714 | MOENCH, HOLGER. Atomic frequency acquisition device based on self-mixing interference. US8264284. 2012-09-11. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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