A dual beam photonic wavelength refernce. (December 2021)

• Record Type: Journal Article
• Authors: Hummon, Matthew; Bopp, Douglas; Kruse, Jesse; Yulaev, Alexander; Westly, Daron; Srinivasan, Kartik; Aksyuk, Vladimir; Kitching, John
• Is Part Of: Measurement. Volume 18(2021)
• Publication Date: 2021-12
• Subjects: Atomic spectroscopy -- Photonic integration -- Wavelength reference; Detectors -- Periodicals; Measurement -- Periodicals; 530.7
• DOI: 10.1016/j.measen.2021.100288
• Languages: English
• ISSNs: 2665-9174

Abstract

Abstract: We present operation of a photonically integrated wavelength reference at 780 nm using a dual beam geometry. The dual beams are generated by a pair of extreme mode converting grating beam expanders that generate a pair of overlapped, counter-propagating beams inside the volume of a microfabricated vapor cell. We perform spectroscopy of rubidium and a characterize the stability of laser locked to a sub-Doppler transition at 780 nm. By stabilizing the laser to a known transition in an atomic vapor, this device can serve as a quantum wavelength reference. The dual beam geometry also enables investigation of two-photon absorption in a three-level ladder configuration in rubidium using excitation at 780 nm + 776 nm.