We calculate amplitude squeezing spectra for the light from a variety of conventionally pumped three- and four-level lasers. Hence we extend a recent prediction that a certain three-level laser can generate nonclassical light without the need for rigged pumping.

The quantity, size and distribution of pinning centers are key factors in determining the Jc of Nb-Ti-based superconductors. In Artificial Pinning Center, APC composites large strains must be applied between the assembly of the pinning structure and the final strand, which can result in large changes and variations in pinning center size and shape. In order to correctly interpret the properties...

Before making a comparison of grass-fed vs. grainfed beef it is necessary to first define these two beef types. An animal is considered grass-fed, according to the USDA Grass Fed Marketing Claim Standards, when grass and forage are the “feed source consumed for the lifetime of the ruminant animal, with the exception of milk consumed prior to weaning. Animals cannot be fed grain or grain by-prod...