According to foreign media reports, the physicist of the American Astrophysics Joint Laboratory (JILA) used the directional antenna concept and used it in the quantum field to invent the super-radiation optically pumped deep red luminescent laser. The wavelength of the laser beam output is 100-1000 times higher than that of the traditional best-in-class visible-band lasers, which can be used in communications, navigation, atomic clocks, and space-based gravitational wave detection. JILA is a joint research institute of NIST and the University of Colorado at Boulder.
In the field of super-radiation, the exposed atomic line width of the gain medium is much smaller than the line width of the cavity. The laser developed by JILA includes one million helium atom dipoles. When the laser is running, there are only two photons in the laser cavity. These two photons isolate the atomic dipole from the nearby environment (including the mirror oscillation), resulting in the linewidth of the new laser being higher than the line at the quantum limit of the conventional laser. The width is also shortened by at least 10,000 times, while the cavity width of a conventional laser is only a little shorter than the bare atomic line width.
In the cavity, only 0.2 photons are needed at a time to maintain the electric field oscillation, and the dipole remains synchronic; almost all photons have escaped before being captured by the mirror or disturbed by the synchrotron, thus avoiding the traditional The laser frequency drift in the laser occurs.
According to James Thompson, a physicist at JILA/NIST, although helium atoms usually emit one photon per second, some of the incidental changes in helium atoms have resulted in a 1000-fold increase in photon rate and super-radiation. This "stimulated emission" is consistent with the premise that the laser is generated (ie, the stimulated radiation amplification of light).
Although the emitted light is somewhat dark (one million times darker than the laser bar), the light emitted from the super-radiation laser can lock the power output of another ordinary laser and transfer it to other lasers. And that bright laser is probably 100-1000 times more confusing than the most indiscriminate laser beam today, and this light can be applied to the atomic clock that most improved the predecessors. Â
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