Abstract
We report on a spectral asymmetry in cw-pumped type-II spontaneous parametric down-conversion. We observe that when the pump beam is focused, the spectra of ordinary and extraordinary down-converted photons broaden unequally. Theoretical analysis indicates that this asymmetry can be attributed to the difference in the angular dispersion (walk-off) of the two kinds of photons, coupled with the well-known correlation between wavelength and emission direction.
| Original language | English |
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| Article number | 063828 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 77 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 18 2008 |