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The canonical example of coherent interaction between oscillators is a system of coupled pendulums — where due to the coupling, energy is transferred slowly from one oscillator to the other and back at a beat frequency that reflects the coupling strength. A system of coupled pendulums is an idealization of coherent transfer of energy, that cannot be directly observed in steady-state — a real system...
The potential of Optical Frequency Combs (OFC) as wide bandwidth, stable, coherent, multimode sources is widely recognized and has applications in various fields, such as metrology, spectroscopy, optical communications or biomedicine. The dual optical frequency comb approach relies on the use of a second local oscillator (LO) comb with slightly different repetition frequency. This LO is then heterodyned...
Laser spectroscopy is a valuable tool in chemical analysis. Analyzing more than one sample is desired (or even required) in many gas sensing applications, e.g. in isotopic ratiometery or gas leak detection. In typical implementations multiple samples are measured with multiple sources and/or detectors or using opto-mechanical switches. Here we present a new approach to gas detection of multiple samples...
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