Taajuushaarukat

Taajuushaarukat, also known as frequency combs, are advanced tools used in the field of optics and metrology. They are generated by mode-locked lasers, which produce extremely short pulses of light at regular intervals. These pulses are so short that they can be considered as a series of discrete frequencies, much like the teeth of a comb. This unique property makes frequency combs invaluable for various applications.

One of the primary uses of frequency combs is in precision spectroscopy. By comparing the frequencies of the comb's teeth to those of an atomic transition, researchers can measure the frequency of the transition with high accuracy. This has led to significant advancements in atomic clocks and the redefinition of the second.

Frequency combs are also used in telecommunications for high-speed data transmission. They can be used to generate multiple channels of light, each at a slightly different frequency, which can then be used to carry data. This allows for the transmission of large amounts of data over long distances.

In addition to their practical applications, frequency combs have also contributed to fundamental research in physics. They have been used to study the properties of light and matter, and to test the fundamental laws of physics.

Despite their many advantages, frequency combs also have some limitations. They require precise control of the laser parameters, and they can be complex and expensive to implement. However, ongoing research is continually improving their performance and reducing their cost.