The properties of stable lasers are discussed. Consideration is given to the methods of production of lasers with a very narrow linewidth of about 0.5 Hz and to their use in achieving high values of long-term frequency stability and reproducibility. The results of investigations of frequency stability of a He-Ne laser with a methane absorbant and a telescopic beam expander are presented.
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.