^_^ do you know that!!!!!
- Atom optics (or atomic optics) is the area of physics which deals with beams of cold, slowly moving neutral atoms, as a special case of a particle beam.
Like an optical beam, the atomic beam may exhibit diffraction and interference, and can be focused with Fresnel lens  or a concave atomic mirror .
Several scientific groups work in this field  . 
Until 2006, the resolution of imaging systems based on atomic beams was not better than that of an optical microscope, mainly due to the poor performance of the focusing elements. Such elements use small numerical aperture; usually, atomic mirrors use grazing incidence, and the reflecticity drops drastically with increase of the grazing angle; for efficient normal reflection, atoms should be ultra-cold (Bose-Einstein Condensate), and the deal with such atoms likes a trapping rather than an optics.
Recent scientific publications about Atom Nano-Optics, evanescent field lenses  and ridged mirrors  show significant improvement since the beginning of the 21st century. In particular, an atomic hologram can be realized .
More bibliography about Atom Optics can be found at the Resource Letter . Also, there is an updating bibliography list about atom mirrors at .
- Holography is the making of holograms, which are 3 dimensional images embedded in a 2 dimensional surface. This process is performed using lasers (due to the fact that they are focused, coherent sources, as opposed to normal light). A wide laser beam shines on a half silvered mirror, so half the light goes through to the film, while the other half is reflected down on to the object to go into the hologram. Light from every point on the object, as a result, strikes every point on the film, and the interference of the two beams allow the film to record both the intensity and the phase of the light reaching it. If we think about it, the intensity bit is just like a normal photograph. The phase relates directly to the 'depth' (because the phase changes over distance). The interference between the rays from the object and the rays going straight through the mirror allows this phase difference to be found, and so recorded on the film.
To view the hologram a laser must once again be used. After the film is developed, the hologram is placed in laser light of the same wavelength as is was produced with. The hologram acts as a sort of diffraction grating, producing a real 2D image of the hologram (on the opposite side to the laser), and a virtual 3D image on the same side as the laser, thus producing the 3D effect.