Spectroscopy (Li D1 & D2)

The D1 and D2 lines of lithium are both located near 671 nm. Compared with other alkali metals, the two transitions are spectrally particularly close to each other. Their investigation in lithium spectroscopy therefore places high demands on the spectral resolution, tuning accuracy, and stability of the laser used.

Lithium spectroscopy can be used to investigate the electronic structure, hyperfine structure, and isotope shift of lithium. Of particular interest are the two stable isotopes lithium-6 and lithium-7. They are frequently used in experiments with cold atoms and quantum gases. As a fermionic isotope, lithium-6 is particularly relevant for studying strongly interacting Fermi gases, while lithium-7 enables the investigation of bosonic quantum systems.

For high-resolution measurements of Li D1 and Li D2 transitions around 671 nm, narrowband, precisely tunable laser sources are required. Our single frequency laser diodes for lithium spectroscopy provide the spectral precision and stability required for the selective investigation of these transitions. Use our product finder to find the right laser diode for your lithium spectroscopy application.