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Researchers at ETH Zurich have developed a method that uses a single laser cavity to create two high-powered optical frequency combs, emitting high-power femtosecond pulses. The advance supports potential future developments that move toward designing more compact dual combs that offer flexibility in power, wavelength, bandwidth, and pulse repetition rates. Those combs would be able to support development of dual-comb light sources for spectroscopy and precision distance measurements.
The researchers used a single laser cavity multiplexed with birefringent calcite crystals to allow for lasing in the two polarization states, and combined this birefringent crystal polarization multiplexing technique with a diode-pumped solid-state…READ MORE