High-Efficiency, Extra-Cavity Second Harmonic Generation of Weak Femtosecond Pulses

Photonics(2016)

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摘要
Frequency doubling efficiency of 53% is reported for low energy (~1.4nJ/pulse) femtosecond pulses at 78 MHz using a BIBO crystal placed in an external ring cavity, aiming applications in non-linear frequency conversion and quantum optics.
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