Spectroscopy (Rb D1 & D2)

Rubidium is one of the most commonly used elements in atomic and laser spectroscopy. The Rb D2 line is located at 780.24 nm, while the Rb D1 line is located at approximately 794.98 nm. Both transitions exhibit a characteristic hyperfine structure that can be precisely investigated using narrowband lasers and is of particular importance in rubidium spectroscopy.

Rubidium vapor cells are frequently used as atomic frequency references and for laser frequency stabilization. Typical techniques include absorption spectroscopy, Doppler-free saturation spectroscopy, and frequency-modulation spectroscopy. These methods can be used to stabilize lasers, determine transition frequencies, and investigate interactions between light and atoms.

The rubidium isotopes Rb-85 and Rb-87 also play an important role in atomic clocks, magnetometry, quantum optics, and experiments with cold atoms. Precise addressing of the Rb transitions requires a narrow linewidth, high frequency stability, and controlled tuning of the laser wavelength.

Our portfolio includes compact DFB lasers as well as tunable external-cavity laser solutions for rubidium spectroscopy. Use our product finder to find the right laser diode for your rubidium spectroscopy application.