Frequency Comb

Frequency Comb Latest News

Frequency combs are an important modern tool which are used to calibrate atomic clocks and have various other applications.

About Frequency Comb

• It is a special kind of laser light whose spectrum, or set of frequencies, resembles the teeth of a comb.
• Frequency combs are simple and compact tools that phase coherently connect the radio frequency domain (say below 100GHz) with the optical domain (say above 200THz).

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Characteristics of Frequency Comb

• Instead of containing just one colour (one frequency), it emits a large number of evenly spaced frequencies. The spacing is extremely regular.
• Frequency combs are widely-used, high-precision tools for measuring and detecting different frequencies colors — of light. 
• It has high stability and precision.

Applications of Frequency comb

• It helps scientists compare an unknown light frequency to a stable reference with extraordinary precision. 
• Frequency combs are an important modern tool to calibrate atomic clocks and measure shifts in light caused by gravity.
• It is used to detect exoplanets.
• It is also used in high-speed spectroscopy

Source: TH