%0 Generic %1 Migdal2009 %A Migdal;, Piotr %A Wasilewski, Wojciech %D 2009 %K amplifier downconversion imported modes nopa optics physics quantum vortex %T Noise reduction in 3D noncollinear parametric amplifier %U http://arxiv.org/abs/0908.2207 %X We find analytically an approximate Bloch-Messiah reduction of a noncollinear parametric amplifier pumped with a focused monochromatic beam. We consider type I phase matching. The results are obtained using a perturbative expansion and scaled to high gain regime. They allow a straightforward maximization of the signal gain and minimization of the parametric fluorescence noise. We find fundamental mode of the amplifier which is an elliptic Gaussian defining optimal seed beam shape. We conclude that the output of the amplifier should be stripped of higher order modes, which are approximately Hermite-Gaussian beams. Alternatively, the pump waist can be adjusted such that the amount of noise produced in the higher order modes is minimized.

@misc{Migdal2009, abstract = { We find analytically an approximate Bloch-Messiah reduction of a noncollinear parametric amplifier pumped with a focused monochromatic beam. We consider type I phase matching. The results are obtained using a perturbative expansion and scaled to high gain regime. They allow a straightforward maximization of the signal gain and minimization of the parametric fluorescence noise. We find fundamental mode of the amplifier which is an elliptic Gaussian defining optimal seed beam shape. We conclude that the output of the amplifier should be stripped of higher order modes, which are approximately Hermite-Gaussian beams. Alternatively, the pump waist can be adjusted such that the amount of noise produced in the higher order modes is minimized. }, added-at = {2009-08-18T14:58:37.000+0200}, author = {Migdal;, Piotr and Wasilewski, Wojciech}, biburl = {https://www.bibsonomy.org/bibtex/21ef2cac3600307485887134ec7f07188/stared}, description = {[0908.2207] Noise reduction in 3D noncollinear parametric amplifier}, interhash = {be2a30a17a329f0741fa0d6de6eb53e7}, intrahash = {1ef2cac3600307485887134ec7f07188}, keywords = {amplifier downconversion imported modes nopa optics physics quantum vortex}, note = {cite arxiv:0908.2207 Comment: 18 pages, 9 figures}, timestamp = {2009-08-18T14:58:37.000+0200}, title = {Noise reduction in 3D noncollinear parametric amplifier}, url = {http://arxiv.org/abs/0908.2207}, year = 2009 }