| Autor: |
Wong J, Bandutunga CP, Zhang Y, Gray MB, Chow JH |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2020 Nov 15; Vol. 45 (22), pp. 6290-6293. |
| DOI: |
10.1364/OL.409721 |
| Abstrakt: |
A frequency and intensity noise immune fiber dispersion spectrometer with a digitally enhanced homodyne phase extraction system is presented. A hydrogen cyanide ( H 13 C N ) vapor cell is placed in a digitally enhanced Sagnac interferometer, and the anomalous dispersion at the 1550.515 nm P11 transition is interrogated with a tunable laser. An analytical model of the dispersion induced phase readout shows close agreement with the experimentally obtained phase signal. Immunity to frequency and intensity noise confers sub-microradian phase sensitivity, corresponding to a spectroscopic detection limit of 77 p p b × m / H z . |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
