The /sup 13/CH/sub 3/OH optically pumped far-infrared laser: new lines and frequency measurements

We report 18 new laser lines from /sup 13/CH/sub 3/OH generated in an optically pumped far-infrared laser; the laser lines are in the range of 54.2-420 /spl mu/m and are all characterized in wavelength, polarization relative to the pumping CO/sub 2/ radiation, and pump offset relative to the CO/sub 2/ center frequency. The frequencies of seven of these new lines along with 10 previously reported lines were measured by an accurate heterodyne technique, mixing them in a metal-insulator-metal (MIM) point contact diode, with another laser line of known frequency.

[1]  K. Evenson,et al.  Optically pumped far-infrared laser lines and frequencies from 13 CD 3 OH , 1995 .

[2]  K M Evenson,et al.  Short-wavelength far-infrared laser cavity yielding new lines in methanol. , 1995, Optics letters.

[3]  R. Lees,et al.  Fourier transform spectroscopy of the CO‐stretching band of C‐13 methanol in the torsional ground state , 1995 .

[4]  F. Strumia,et al.  Heterodyne frequency measurements of FIR laser lines around 1.2 and 1.6 THz , 1995 .

[5]  G. Carelli,et al.  Ch318OH: FIR laser line frequency measurements and assignments , 1994, International Conference on Millimeter and Submillimeter Waves and Applications.

[6]  I. Mukhopadhyay.  Assignments and Predictions of Optically Pumped Far-Infrared Laser Lines in [13C] Methanol and Associated High-Resolution Spectra , 1994 .

[7]  E. Vasconcellos,et al.  Far infrared laser lines produced by methanol and its isotopic species: A review , 1994 .

[8]  A. Moretti,et al.  A review of optically pumped far-infrared laser lines from methanol isotopes , 1994 .

[9]  R. Lees,et al.  High-resolution spectroscopy of methanol: Coriolis resonance and far infrared laser identification , 1993 .

[10]  G. Moruzzi,et al.  Acoustooptic extension of the frequency tunability of CW CO2 lasers: New FIR lasers emissions from CH3OH and13CH3OH , 1991 .

[11]  J. Petersen.  Infrared–infrared double-resonance spectra of 13 CH 3 OH and 12 CH 3 OH , 1989 .

[12]  R. Lees,et al.  Applications of high resolution spectroscopy to the identification of far-infrared laser emission from optically pumped13CH3OH , 1987 .

[13]  A. Scalabrin,et al.  Measurement and assignment of new FIR laser lines in12CH3OH and13CH3OH , 1987 .

[14]  Massimo Inguscio,et al.  A review of frequency measurements of optically pumped lasers from 0.1 to 8 THz , 1986 .

[15]  M. Inguscio,et al.  Heterodyne of optically pumped fir molecular lasers and direct frequency measurement of new lines , 1986 .

[16]  F. Strumia,et al.  13CH3OH and13CD3OH optically pumped fir laser: New large offset emission and optoacoustic spectroscopy , 1986 .

[17]  Massimo Inguscio,et al.  IR-FIR Transferred lamb-dip spectroscopy in optically pumped molecular lasers , 1979 .

[18]  K. Evenson,et al.  High resolution spectroscopy of vibrationally excited 13CH3OH by frequency measurement of FIR laser emission , 1979 .

[19]  D. Hodges.  A review of advances in optically pumped far-infrared lasers , 1978 .

[20]  J. Petersen,et al.  Observation and assignment of far-infrared laser lines from optically pumped C13H3OH , 1978 .