ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We demonstrate a method of dynamic, tunable quasi-phase matched second-harmonic generation using optically induced polarization gratings with periods equal to twice the coherence length. These gratings increase the peak second-harmonic conversion efficiency by a factor of 17 above a poled strontium barium niobate crystal, to 0.01% for fundamental beam intensities of 0.8 MW cm−2. We generate quasi-phase matching spectral response peaks as narrow as 0.175 nm and tailor the response by writing an ensemble of gratings in the same volume, each of which enhances the second-harmonic generation at a predetermined wavelength.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.111349