Abstract
In this work we report new FIR laser lines from CD3OD optically pumped by a CO2 waveguide laser. The wide tunability of this laser (290 MHz) makes it possible to pump absorption lines with large frequency offset relative to the CO2 laser line center, which are not possible by using conventional CO2 lasers. As a consequence 19 new laser lines have been discovered, ranging from 38.0 μm to 455.2 μm in wavelength. For all lines, precise frequency offset measurements between the CO2 line center and the center of the absorber CD3OD line were performed using the transferred Lamb-dip technique. We also present direct Doppler-free offset measurements of infrared absorption, obtained within the FIR laser cavity itself, using optoacoustic detection.
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Work supported by FAPESP, CNPq, FAP-Brasil and CNR-Italy
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Telles, E.M., Moraes, J.C.S., Scalabrin, A. et al. New FIR laser lines from CD3OD optically pumped by a CO2 waveguide laser. Appl. Phys. B 52, 36–41 (1991). https://doi.org/10.1007/BF00405684
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DOI: https://doi.org/10.1007/BF00405684