Abstract:
A radical enhancement of four-wave mixing in hollow-core photonic-crystal fibers is experimentally demonstrated. An enhancement ratio of about 800 relative to the regime of tight focusing is achieved for the four-wave mixing process $3\omega=2\omega+2\omega-\omega$, where $\omega$ and $2\omega$ are the frequencies of fundamental radiation and the second harmonic of picosecond Nd:YAG laser pulses.
Fulltext:
PDF file (228 kB)