Narrow-band lasers with extremely small bandwidths are increasingly being used in spectroscopy and in ultra-precise measurement technologies. Thanks to the coupling (for which a patent application has been filed) to a radio-frequency source with the aid of a frequency comb, PTB has demonstrated an additional, high long-term stability of the optical frequency of better than 5 · 10−15 over several hours for these applications. The resulting narrow-band optical frequency source thus opens up the possibility to carry out optical long-term precision measurements.
Long-term stable single-frequency laser
Contact
Sebastian Raupach
Department 4.3 Quantum Optics and Unit of Length
Phone: +49 (0)531 592-4341
sebastian.raupach(at)ptb.de