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We present a mid-infrared frequency comb based on a synchronously-pumped, femtosecond optical parametric oscillator. The idler (signal) is continuously tunable from 2.8-4.8 mum (1.76-1.37 mum) with a maximum average output power of 1.50 W.
Cavity-enhanced direct frequency comb spectroscopy combines broad spectral bandwidth, high spectral resolution, precise frequency calibration, and ultrahigh detection sensitivity, all in one experimental platform based on an optical frequency comb interacting with a high-finesse optical cavity. Precise control of the optical frequency comb allows highly efficient, coherent coupling of individual comb...
High-harmonic generation is achieved at 100 MHz repetition rates by utilizing a femtosecond enhancement cavity to increase peak intensities from a mode-locked laser. This provides a coherent frequency comb in the VUV for high-resolution spectroscopy.
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