Abstract
An external cavity diode laser with very low levels of amplitude noise is shown to have considerable amounts of frequency noise at the longitudinal mode spacing frequency. This noise is observed by tuning the laser near to resonance with an atomic vapour and measuring the transmission of the vapour with a photodiode. The measured noise is enhanced by more than two orders of magnitude at the longitudinal modespacing frequency by conversion of frequency noise to amplitude noise by the vapour. The frequency noise was also simulated using intracavity electro optic modulation.
Original language | English |
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Pages (from-to) | 31-34 |
Number of pages | 4 |
Journal | Optics Communications |
Volume | 122 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 15 Dec 1995 |