Measurement of Acetylene-d Absorption Lines with a Self-Referenced Fiber Laser Frequency Comb

This paper employed a self-referenced fiber laser frequency comb (FFC) to create a reference atlas of transitions of another acetylene isotope whose band covers the C-band telecom spectrum from 195 to 198 THz. Using the FFC together with a cavity-based diode laser-saturation-absorption spectrometer, this uncertainty is reduced to less than 2 kHz. It is concluded that the self-referenced fiber laser comb provides a very reliable and straightforward system by which large numbers of reference frequencies can be measured.