A wide-range optical frequency generator based on the frequency comb of a femtosecond laser.
A precise way of optical frequency generation is demonstrated with direct use of the frequency comb of a mode-locked femtosecond laser. Only a single mode is extracted at a time on demand from the frequency comb through a composite filtering scheme and then amplified by means of optical injection locking with extremely low background noise. Generated output signals are found to preserve not only the narrow linewidths of the selected individual modes but also the absolute frequency positions of the original comb over a wide spectral range. These outstanding performances of optical frequency generation could find applications in high precision spectroscopy, frequency calibration, and length metrology.
Billionth Uncertainty Precision Engineering Group, Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea.
Young-Jin
YJ
Kim
Jonghan
J
Jin
Yunseok
Y
Kim
Sangwon
S
Hyun
Seung-Woo
SW
Kim
D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D055095:Optics and Photonics / Q000295:instrumentation*; D009991:Oscillometry / Q000295:instrumentation* / Q000379:methods