Spectral linewidth of external cavity semiconductor lasers with strong, frequency-selective feedback
- 18 July 1985
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 21 (15) , 658-659
- https://doi.org/10.1049/el:19850467
Abstract
The spectral linewidth of 1.5 μm external cavity semiconductor lasers is investigated. For nonzero intermediate facet reflectivity, detuning from exact resonance is found to reduce linewidths substantially for strong, frequency-selective feedback. A 10 cm cavity gives linewidths below 1 kHz, while coherent systems requirements will be met by cavities under 2.5 cm.Keywords
This publication has 0 references indexed in Scilit: