Abstract
Frequency stabilization of the CO laser using a CO lamb-dip is achieved in the range from 5.0–6.3 μm. The CO saturation signal is obtained from a low-pressure discharge in absorption and is detected using optogalvanic, detection. The frequency stability and reproducibility has been verified to be better than 100 kHz; this is an improvement of more than one order of magnitude compared with locking techniques using CO laser gain profiles.
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Alexander von Humboldt Awardee from National Bureau of Standards, Boulder, Colorado, USA