Spectroscopy of the CF(4) laser.

Area of Science:

• Molecular Spectroscopy
• Laser Physics
• Infrared Spectroscopy

Background:

• The (nu(2) + nu(4)) ? nu(2) laser system in carbon-12 tetrafluoride ((12)CF(4)) is a source of far-infrared radiation.
• Understanding the precise spectroscopic parameters of this system is crucial for its application in various scientific fields.

Purpose of the Study:

• To accurately measure the frequencies of 28 laser lines in the (12)CF(4) (nu(2) + nu(4)) ? nu(2) system.
• To identify the specific (12)CF(4) and (12)C(16)O(2) transitions involved in the laser operation.
• To determine the band origin and rotational constant for the nu(2) vibrational level of (12)CF(4).

Main Methods:

• Utilized carbon-12, 16-oxygen-2 ((12)C(16)O(2)) molecules as pump sources, spanning P(14) to R(24) transitions.
• Measured the frequencies of 28 (12)CF(4) laser lines with a high accuracy of +/-0.2 cm(-1).
• Analyzed the spectroscopic data to identify pump and laser transitions and derive molecular constants.

Main Results:

• Successfully measured 28 (12)CF(4) laser line frequencies.
• Identified the corresponding (12)CF(4) and (12)C(16)O(2) transitions.
• Determined the band origin (nu(2)) to be 435.27 +/- 0.06 cm(-1) and the rotational constant (B(2)) to be 0.19143 +/- 0.00007 cm(-1) for the nu(2) level.

Conclusions:

• The determined spectroscopic constants allow for accurate prediction of (12)CF(4) laser frequencies for any given pumping frequency.
• This work provides a precise spectroscopic database for the (12)CF(4) (nu(2) + nu(4)) ? nu(2) laser system.
• The findings enhance the utility of this laser system for spectroscopic applications.