Undergraduate Honors Thesis


Two-Color Rubidium Clock Public Deposited

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  • Atomic clocks are of great interest for both daily uses, including satellite navigation, stock trading, and national defense purposes which include missile and aircraft guidance. All these applications have demanding requirements for the stability, size, durability, cost of an atomic clock. One kind of atomic clock that is ideal for all those applications is vapor optical rubidium clock, which is exploiting the two-photon transition from the ground state (5S1/2) of the Rb atom to the excited state (5D5/2). Such a clock has a compact size and can operate in a less ideal environment. Although it offers less stability compared to cold atomic clocks, its robustness allows it to be operated on trucks, planes, and can even survive a rocket launch.

    There are two types of vapor optical rubidium clock schemes: one-color scheme, which is driven by lasers with single wavelength, and two-color scheme, which is driven by two lasers at different wavelengths. The scheme that we are interested in is the two-color scheme, because this scheme offers a better signal strength for atomic transition and an elaborate scheme to suppress systematic shifts over time, both potentially leading to a better timing standard than what the one-color clock offers. These reasons make the two-color scheme much more favorable to applications when compared to the one-color scheme.

Date Awarded
  • 2023-04-18
Academic Affiliation
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Granting Institution
Last Modified
  • 2023-04-21
  • Boulder
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