Pulsed first-overtone CO laser with output efficiency higher than 10%
1999
Abstract Output efficiency as high as 11% and specific output energy up to ∼50 J/l Amagat were experimentally obtained for a cryogenically cooled multiline pulsed first-overtone (FO) CO laser for the first time. The longest generated wavelength was 4.1 μm, corresponding to the 37→35 vibrational transition. FO CO lasing was observed within an initial gas temperature interval of 100–220 K. Theoretical calculations based on the experimental data predict that the FO CO laser efficiency can be increased up to 20%. High efficiency and high specific output energy obtained in the experiment places the FO CO laser amongst other high-power lasers.
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