Abstract
We report high resolution sub-Doppler spectroscopy of molecular iodine hyperfine transitions around 541 nm. A novel solid state source, based on a diode laser, a Yb+ fiber amplifier and a periodically-poled KTiOPO4 crystal, was developed, having a continuous tunability range of 1.2 THz. The performance of this crystal for doubling 1083 nm laser radiation is demonstrated for the first time, as well as the use of a broad band Yb-doped fiber amplifier for Doppler-free spectroscopy. Preliminary results for the frequency stability of the 1083 nm diode laser locked to an iodine hyperfine line are reported. This source can be used as a compact frequency standard for precision measurements of the atomic helium and determination of the fine structure constant α.
Original language | English |
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Pages (from-to) | 453-458 |
Number of pages | 6 |
Journal | Optics Communications |
Volume | 176 |
Issue number | 4 |
DOIs | |
State | Published - 1 Apr 2000 |