Observation of optical vortex streets in walking second-harmonic generation.
نویسندگان
چکیده
We report what is believed to be the first experimental observation of spontaneous nucleation of arrays of optical vortices in the process of second-harmonic generation in a crystal with moderate Poynting vector walk-off, pumped with focused beams containing screw phase dislocations. Our experiments were conducted in lithium triborate under conditions of small-efficiency second-harmonic generation pumped by nanosecond pulses at 1064 nm.
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عنوان ژورنال:
- Optics letters
دوره 27 8 شماره
صفحات -
تاریخ انتشار 2002