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Portable Optical Atomic Clocks

Context

A recent study introduced a portable optical atomic clock suitable for onboard ships. This innovation, utilizing molecular iodine as a frequency standard, represents a significant advancement in optical timekeeping. Miniaturization of components like the spectrometer, laser system, and frequency comb enables compact designs suitable for various applications.

Key-highlights:

Testing: Initial tests demonstrated the stability and accuracy of these portable optical atomic clocks.
The clocks exhibited resilience to environmental factors like temperature fluctuations and humidity changes.
Features:
- Optical atomic clocks operate at optical frequencies, leveraging lasers to stimulate atomic transitions.
- The coherent light emitted by lasers ensures precise and stable measurements.
- Strontium (Sr) and ytterbium ions are commonly used in optical atomic clocks due to their narrow linewidths and stable optical transitions.
- Accuracy: While not as accurate as laboratory-based optical atomic clocks, these portable variants offer sufficient precision for real-world applications.
- Quality: accuracy, portability, and robustness
- Application: poised to revolutionize various industries, from maritime navigation to space exploration

Fact Box: About Atomic clock

An atomic clock is a device that uses the vibrations of atoms to measure time
Specifically, it uses the oscillations of the electrons in in atoms to keep time
They work by using a type of atom called a "cesium atom".
To measure time using cesium atoms, an atomic clock uses a device called a "microwave cavity".
Types of atomic clocks: There are two types of atomic clocks: cesium atomic clocks and hydrogen maser atomic clocks.
Cesium atomic clocks are the most common and are used to define the international standard for time, called Coordinated Universal Time (UTC).
Hydrogen maser atomic clocks are even more accurate than cesium atomic clocks and are used in scientific research.
Application: It is used in many applications that require precise timing, such as:
GPS systems and scientific research navigation
emergency responses, and military operations

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Portable Optical Atomic Clocks

Key-highlights:

Fact Box: About Atomic clock

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