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- Title
A diode laser system for spectroscopy of the ultranarrow transition in ytterbium atoms.
- Authors
Yamaguchi, A.; Uetake, S.; Takahashi, Y.
- Abstract
A narrow-line diode laser system has been developed for high-resolution spectroscopy of the magnetic quadrupole transition in ytterbium (Yb) atoms at 507 nm. The system consists of an extended-cavity laser diode at 1014 nm, a tapered amplifier and a periodically poled lithium niobate nonlinear crystal which converts the wavelength from 1014 nm to 507 nm. We have stabilized the laser frequency and reduced the linewidth below 1 kHz by tightly locking the laser to a high-finesse optical cavity. By using the developed laser system, we have successfully observed the ultranarrow ${}^{1}{S}_{0}\leftrightarrow^{3}{P}_{2}$ transition in Yb atoms. Furthermore, our simple and compact laser system could be a high performance and portable frequency reference using iodine spectra whose linewidth becomes less than 50 kHz around 507 nm. We have also demonstrated spectroscopy of iodine molecules.
- Subjects
LASERS; LITHIUM niobate; FREQUENCIES of oscillating systems; SPECTRUM analysis; YTTERBIUM; OPTICS
- Publication
Applied Physics B: Lasers & Optics, 2008, Vol 91, Issue 1, p57
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-008-2953-2