Injection locked DFB laser as an optical frequency reference in the infrared region based on femtosecond fiber laser comb

We demonstrate a DFB laser that can be injection locked to desire single mode of a femtosecond fiber laser comb. The femtosecond injection locking technique that can select one component among the fiber laser comb modes was applied to the comb selection. The DFB laser injection locked to the desired comb mode was used as optical frequency reference for absolute frequency measurement of an acetylene stabilized laser. The absolute frequency of the laser stabilized on the P(16) transition of ¹³C₂H₂ was estimated to be 194 369 569 385.7 kHz.