High-energy fiber optical parametric chirped-pulse oscillator

High-power wavelength-agile fiber sources are now competitive for many widespread applications such as non-linear imaging or coherent Raman scattering spectroscopy. Soliton self-frequency shift, self-mode conversion and self-phase modulation are commonly used to obtain the necessary wavelength shift but are limited in peak-power scalability due to intensity-related damages. However, it is possible to overcome this limitation by exploiting the broad tunability offered by degenerate four-wave mixing in optical fibers along with chirped-pulse amplification (CPA), then allowing the generation of high-energy fs pulses at different wavelengths [1] - [4] . Moreover, the exploitation of this principle in a fiber optical parametric oscillator (FOPO) with normal dispersion can enable record performances in terms of pulse energy [5] . Combining both concepts to build a fiber optical parametric chirped-pulse oscillator (FOPCPO) is then attractive to enable a full control of the output wavelength and bandwidth, as recently shown in a numerical study [6] . Thereby, we experimentally demonstrate here a high-energy FOPCPO, numerically analyze its operation, and discuss its potential for further energy scaling [7] .