Title :
New CO2 laser lines in the 11-μm wavelength region: new hot bands
Author :
Chou, Che-Chung ; Evenson, K.M. ; Zink, K.R. ; Maki, A.G. ; Shy, Jow-Tsong
Author_Institution :
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
2/1/1995 12:00:00 AM
Abstract :
Nineteen new laser lines in the 11-μm wavelength region have been observed in CW oscillation from a CO2 laser with a high-Q, high-resolution cavity at a higher than usual current density. The frequency of each line has been measured using heterodyne frequency measurement techniques. Analysis of the frequencies shows that 15 lines are rotation-vibration transitions of the 0112-[1111,0311]I band (the first sequence hot band) of the CO2 molecule and four lines belong to the rotation-vibration transitions of the 0221-[12 20, 0420]I band of CO2
Keywords :
carbon compounds; frequency measurement; gas lasers; laser cavity resonators; laser transitions; laser variables measurement; rotational-vibrational states; 0112-[1111,0311]I band; 11 mum; CO2; CO2 laser lines; CW oscillation; current density; heterodyne frequency measurement techniques; high-resolution cavity; hot bands; rotation-vibration transitions; Absorption; Current density; Frequency measurement; Gratings; Laser modes; Laser transitions; NIST; Physics education; Waveguide lasers; Wavelength measurement;
Journal_Title :
Quantum Electronics, IEEE Journal of
