Sound amplification by stimulated emission of radiation the axes of the mirrors, it is possible for photons to repeat multiple reflections and force more and more photons to follow them producing an avalanche effect. The number of photons of this coherent laser beam increases and competes the number of photons perished due to losses. The basic necessary condition for the generation of a laser radiation is the population inversion, which can be achieved either by exciting atoms and inducing percussion or by external radiation absorption. A SASER device mimics this procedure using a source-pump to induce a sound beam of phonons. This sound beam propagates not in
A-sound Best Sound ). A-Sound put out their debut album in July 2008: Release. It was the first Mongolian rock album to feature some songs in English. The album featured many popular songs, including: "Uyanga," "Shine On," and "Forever." "Uyanga" is a popular girl's name and is a pleasant song sung in Mongolian. "Shine On" and "Forever" are two slices of immaculate pop song-craft, and to music critic (among other things) Brian Offenther, should have been international pop smashes. In "Forever," lead singer Temuulen's crystal clear voice really sours. In early 2009, a deluxe version of Release was put out and