Abstract
Observation of optical vortex streets in walking second-harmonic generation was reported. Experiments were conducted in lithium triborate under conditions of small-efficiency second-harmonic generation pumped by nanosecond pulses at 1064 nm. Screw phase dislocations were nested in the pump beam by use of high-diffraction-efficiency computer-generated off-axis holograms. Results indicated that the pattern of vortices generated depended strongly on the exact material and input-light conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 625-627 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 27 |
| Issue number | 8 |
| Publication status | Published - 15 Apr 2002 |
| Externally published | Yes |