On-chip spectroscopy

Wenge Yang, Donald B. Conkey, Bin Wu +3 more

Holger Schmidt

Miniaturized atomic vapor cells can be built on a semiconductor chip using hollow-core waveguide technology. We review the status of these integrated spectroscopy chips, including the observation of signatures of quantum interference on a chip.

Gerard Meijer

Bin Wu, John F. Hulbert, Aaron R. Hawkins +1 more

Harnessing the unique optical quantum interference effects associated with electromagnetically induced transparency (EIT) on a chip promises new opportunities for linear and nonlinear optical devices. Here, we review the status of integrated atomic spectroscopy chips that could replace conventional rubidium spectroscopy cells. Both linear and nonlinear absorption spectroscopy with excellent performance are demonstrated on a chip using a self-contained Rb reservoir and exhibiting a footprint of only 1.5cm x 1cm. In addition, quantum interference effects including V-scheme and Λ-scheme EIT are observed in miniaturized rubidium glass cells whose fabrication is compatible with on-chip integration.

John D. Hybl, Allison W. Albrecht, Sarah M. Gallagher Faeder +1 more

Jie Miao, Qiaohui Yang, Jiqing Lian +3 more

In this paper we propose a new scheme to realize the chip-scale optical clock by using a dual-wavelength modulation transfer spectroscopy (DWMTS). The electro-optical modulator (EOM) and isolator in conventional modulation transfer spectroscopy which is complicated to be built on chip can thus be avoided. We remove the EOM and isolator at the price of an extra laser, which perform the volume optimization of the entire optical system, making the optical clock based on DWMTS to be a competitive candidate.