A. N. Goncharov, V. I. Baraulya, A. E. Bonert, M. A. Tropnikov, “457-nm radiation source based on a diode laser for precision spectroscopy of magnesium atoms”, Kvantovaya Elektronika, 2020, Volume 50, Number 3,Pages <nobr>272

Lasers

457-nm radiation source based on a diode laser for precision spectroscopy of magnesium atoms

A. N. Goncharov^abc, V. I. Baraulya^a, A. E. Bonert^a, M. A. Tropnikov^a

^a Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
^b Novosibirsk State University
^c Novosibirsk State Technical University

Abstract: We report on the development of a highly stable source of 457-nm radiation based on a diode laser and a tapered amplifier operating in a double-pass scheme. The diode laser frequency was stabilised by a high-Q reference Fabry–Perot interferometer and doubled in a PPSLT nonlinear crystal placed in an enhancement cavity. At a maximum output power of 200 mW at a wavelength of 457 nm, the laser linewidth was less than 5 kHz. The radiation source operation was demonstrated in experiments on precision spectroscopy of cold magnesium atoms in a magnetooptical trap.

Keywords: frequency standards, magnesium, diode laser, tapered amplifier, magneto-optical trap, precision spectroscopy.

Received: 02.12.2019