Sound amplification by stimulated emission of radiation of the laser. In a SASER device, a source (e.g., an electric field as a pump) produces sound waves (lattice vibrations, phonons) that travel through an active medium. In this active medium, a stimulated emission of phonons leads to amplification of the sound waves, resulting in a sound beam coming out of the device. The sound wave beams emitted from such devices are highly coherent. The first successful SASERs were developed in 2009. Instead of a feedback-built wave of electromagnetic radiation (i.e., a laser beam), a SASER delivers a sound wave. SASER may also be referred to as "phonon laser",
Reflections of a Sound Reflections of a Sound "Reflections of a Sound" is a song by Australian rock band Silverchair and is the fourth track on their fifth studio album "Young Modern", released in March 2007. The song was released on 14 July 2007 as the second single from that album. The single was only released in Australia in digital format and as a CD Promo. The music video for the single premiered on 8 June 2007. It was shot in Queensland by directing duo Damon Escott and Stephen Lance and their producer Leanne Tonkes. Like the album art for "Young Modern", is heavily