Carbon dioxide laser stabilization by optoacoustic tracking of an SF(6) Lamb dip.
A rugged optoacoustic room temperature detection scheme is used to lock the frequency of the CO(2) laser oscillating on the P(16) transition line of the 10.6-microm band to one of many potentially usable SF(6) Lamb dips. A low- and high-pressure SF(6) optoacoustic cells combination provides 100% increase in the contrast of the Lamb dip that is furthermore independent from the particular laser power gain profile. The resultant preliminary frequency stability achieved was 1 part in 10(8) over a 10-min period.
Souilhac
D
D
Gundjian
A
A