A tunable CO/sub 2/ laser sideband spectrometer

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1982.1071701· OSTI ID:6301583

Magerl, G; Banek, E; Schupita, W

We describe a high-resolution spectrometer for the 9-11 ..mu..m wavelength region, which is tunable over 23 GHz wide regions below and above each of some 80 CO/sub 2/ laser lines. An electrooptic modulator mixes the frequency-stabilized Ctheta/sub 2/ laser output (frequency f/sub L/) with tunable microwave signals (frequency f/sub M/) to produce tunable, spectrally pure (+ or - 1 x 10-/sub 8/) sidebands in the IR, whose frequencies f/sub L/ + or - f/sub M/ are readily determined with high precision (+ or - 2 x 10-/sup 7/). The design of traveling wave and resonant modulators and associated tuners is given and discussed. The usefulness of the instrument for high resolution absorption spectroscopy and as a tunable local oscillator for heterodyne spectroscopy is demonstrated.

• Research Organization: Dept. of Chemistry, Univ. of Chicago, Chicago, IL 60637
• OSTI ID: 6301583
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-18:8; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300 -- Engineering-- Lasers-- (-1989)
440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
CARBON DIOXIDE LASERS
DESIGN
FREQUENCY RANGE
GAS LASERS
LASERS
MEASURING INSTRUMENTS
RESOLUTION
SPECTROMETERS
TUNING
USES