Open AccessHighly coherent, watt-level deep-UV radiation via a frequency-quadrupled Yb-fiber laser system
Author(s) -
Zakary Burkley,
Adam D. Brandt,
Cory Rasor,
Samuel Cooper,
Dylan C. Yost
Publication year - 2019
Publication title -
applied optics
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 197
eISSN - 2155-3165
pISSN - 1559-128X
DOI - 10.1364/ao.58.001657
Subject(s) - optics , materials science , fiber laser , laser , laser power scaling , ytterbium , continuous wave , spectroscopy , optoelectronics , physics , quantum mechanics
We demonstrate a 1.4 W continuous-wave (CW) laser at 243.1 nm. The radiation is generated through frequency quadrupling the output of a ytterbium-doped fiber amplifier system. which produces >10 W of CW power at 972.5 nm. We demonstrate absolute frequency control by locking the laser to an optical frequency comb and exciting the 1S-2S transition in atomic hydrogen. This frequency-stabilized, high-power deep-UV laser is of significant interest for precision spectroscopy of simple and exotic atoms, two-photon laser cooling of hydrogen, and Raman spectroscopy.