Abstract
We report a new iodine spectrometer for absolute
frequency measurements of various transitions of
molecular iodine in the 633 nm region. To obtain good
frequency accuracy, the laser beams used in spectroscopy
have been optimized for spatial and spectral quality.
This is achieved by injection locking a microlensed diode
laser with nearly Gaussian output beam to an
external-cavity diode laser. The external-cavity laser
has been designed for enhanced frequency stability and
reproducibility by minimizing the effects of ambient
pressure and temperature, and by utilizing
transmission-grating geometry for compact and robust
structure. The high stability combined with the invariant
output beam pointing makes the laser design adaptable
also for other purposes of length metrology and atom
optics.
| Original language | English |
|---|---|
| Pages (from-to) | 1305-1311 |
| Journal | Measurement Science and Technology |
| Volume | 16 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2005 |
| MoE publication type | A1 Journal article-refereed |