Precise control of the laser repetition rate is desired when the laser pulses need to be synchronized with further ultrafast signals in the experiment, such as another laser, THz or synchrotron radiation. In the asynchronous optical sampling scheme, this repetition rate lock between two femtosecond lasers is slightly detuned for high-speed time-domain scanning. This is exploited in ultrafast time-domain spectroscopy of charge carrier kinetics, lattice vibrations, and other collective dynamic phenomena in solids, semiconductors, and gases.
- TECHNICAL ARTICLE: Femtosecond photonics: precision meets robustness
- SCIENTIFIC PUBLICATION: Wideband detection of transient solid-state dynamics using ultrafast fiber lasers and asynchronous optical sampling
- SCIENTIFIC PUBLICATION: Design and fabrication of ultrasonic transducers with nanoscale dimensions