Description
Lasing in the superradiant or “bad cavity” regime has attracted interest in the optical clock community as it offers an alternative to conventional lasers limited by the thermal noise fluctuations of reference cavities. In our experiment, we investigate pulsed lasing on the 7.5 kHz clock transition of $^{88}$Sr atoms in an optical cavity. We continuously repump the lasing to achieve pulse durations on the ms scale, compared to a pulse length of a few $\mu$s using a single population inversion pulse. To observe the narrowing of the spectral line, we constructed an ultra-stable reference cavity system in order to characterize the spectral properties of the emission. Lastly, we experimentally investigate the prospect of using superradiant pulses as a readout of a Ramsey interferometer sequence. This scheme has the advantage of a fast, non-destructive measurement with increased sensitivity, which would be beneficial to the performance of optical atomic clocks.
| Presenter name | Sofus Laguna Kristensen |
|---|---|
| How will you attend ICAP-27? | I am planning on in-person attendance |
