| Zugriffsnummer | 15753 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Frequency-stabilization of a 1.54 micrometer DFB-laser diode to Doppler-free absorption lines of acetylene |
| Autor(in); Institution |
Kurosu, Takayuki; National Research Laboratory of Metrology, Tsukuba, Ibaraki, JAPAN
Sterr, Uwe; 4.31, Längeneinheit, PTB-Braunschweig
|
| Quelle/Jahr | Laser frequency stabilization, standards, measurement, and applications:(2001), 248 - 254 |
| Schriftenreihe | Proceedings of SPIE: 4269 |
| Herausgeber(in) |
Hall, John L.
|
| ISBN | 0-8194-3947-9 |
| DOI | |
| Verlag | Bellingham, Wash.: SPIE |
| Konferenzangaben | Laser Frequency Stabilization, Standards, Measurement, and Applications, San Jose, Calif., 24-26, January, 2001, USA |
| Freie Schlagworte | reference wavelengths ; laser stabilization ; optical telecommunication ; spectroscopy |
| Zusammenfassung | Optical frequency standards in the 1.5 micrometer region are of major interest for metrology in optical telecommunication systems. In this region a number of weak molecular overtone lines are available as wavelength references. We report on the stabilization of a distributed feedback (DFB) laser diode to Doppler-free saturated absorption lines of acetylene using an external build-up cavity. A FM-spectroscopic method (NICE-OHMS) is utilized to obtain signals with improved signal-to-noise ratio and reduced sensitivity to residual frequency fluctuations between the laser and the cavity. A DFB-Laser diode, spectrally narrowed by optical feedback from a plane partially reflecting mirror with output power of 5 mW was locked to a build-up cavity containing an absorption cell filled with acetylene at a pressure of a few pascal. Even with the small optical power available, a contrast of the saturated absorption of 10% was obtained. A highly sensitive detection was achieved by using sidebands at a separation equal to the free-spectral range of the resonator (520 MHz) for a phase sensitive detection of the molecular nonlinear saturated dispersion. This method led to a significantly improved signal-to-noise ratio compared to the detection of the saturated absorption by lock-in techniques. |
Zitierung
Kurosu, T. & Sterr, U. (2001). Frequency-stabilization of a 1.54 micrometer DFB-laser diode to Doppler-free absorption lines of acetylene. Laser Frequency Stabilization, Standards, Measurement, and Applications, San Jose, Calif., 24-26, January, 2001, USA. https://doi.org/10.1117/12.424478