Scale Atomic Clock by National Institute of Standards &Technology

The next generation chip which is named as the atomic clock was demonstrated by the Physicists as well as partners of the NIST (National Institute of Standards &Technology). This clock is smaller in size, designed with optics, chips and electronic components. It is marked at high optical frequencies.

This atomic clock uses 275 mW or less power with extra progress in technology. These clocks could ultimately replace fixed oscillators within navigation systems, telecommunications networks, & used as support clocks on satellites.

heart of next-generation chip-scale atomic clock
heart of the next-generation chip-scale atomic clock

This clock was designed at NIST with the help of California Institute of Technology, Charles Stark Draper Laboratories, & Stanford University. Normal atomic clocks work at microwave frequencies which depend on the cesium atom vibrations.

Optical atomic CLKs work at higher frequencies and offer high precision as they separate time into slighter units. The quality factor of this clock replicates how lengthy the atoms mark on their own without external help.

The atoms in the chip scale atomic clock were explored with a microwave frequency. The different clock versions have to turn into an industry standard of handy applications. However, they need primary calibration & their frequency can flow over time in important timing errors.

The NIST based optical clock has instability about 100 times better than the chip scale microwave clock. The working of this clock is the radium atoms mark at an optical frequency within the THz (terahertz) band.


This marking can be used for stabilizing an IR laser which is named as a CLK laser, which is changed to a GHz microwave clock signal through two frequency combs working like gears.

The operating frequency of one comb is at a THz frequency. This comb is coordinated with GHz frequency comb, and it can be used like lightly spaced ruler protected toward the CLK laser. Thus, the CLK generates an electrical signal with GHz microwave. It can be calculated using conventional electronics which can be stabilized near the THz vibrations of rubidium.

Furthermore, the stability of this chip-scale atomic clock possibly enhanced through low-noise lasers as well as its dimension can be reduced with more complicated integration of electronic and optical.