Leo W. Hollberg

Abstract: We provide an overview of our research on chip-scale atomic devices By miniaturizing optical setups based on precision spectroscopy, we have developed small atomic sensors and atomic references such as atomic clocks, atomic magnetometers, and optical wavelength references We have integrated microfabricated alkali vapor cells with small low-power lasers, micro-optics, and low-power microwave oscillators As a result, we anticipate that atomic stability can be achieved with small size, low cost, battery-operated devices Advances in fabrication methods and performance are presented

TL;DR: In this paper, a simple setup for observing very high contrast coherent population trapping resonances in rubidium is presented, which is achieved by eliminating the 52 P 1/2 DC-light background through polarization and spectral filtering.

TL;DR: Cold atom optical frequency references are still many orders of magnitude away from the frequency stability that should be achievable with narrow-linewidth quantum transitions and large numbers of very cold atoms, and they may be able to achieve levels of phase stability, ΔΦ/Φtotal ≤ 10−20, that could make an important impact in gravity wave science.

TL;DR: In this article, a theoretical comparison between a TE/sub 01n/ cavity and a traditional Ramsey cavity was made with a laser-cooled atom source in a microgravity clock.

TL;DR: In this paper, the authors measured the increase in low-frequency amplitude noise on several extended cavity diode lasers when frequency of phase lock servos were applied using the injection current as the feedback channel, and the AM noise increase inside the FM servo bandwidth is approximately that expected from the suppression of frequency noise uncorrelated with the inherent amplitude noise of the laser.